Unexpected science from a 0.000001 megapixel home-made telescope

Подписаться 1,2 млн

Просмотров 274 тыс.

50% 1

Bonus footage of me talking about the Parkerscope over here on Patreon: / bonus-data-chat-84165442
Thanks to Greg Foot for helping out with all of the filming. Check out their channel: / @gregfoot
Pretty sure Greg was the only RU-vidr who was with me at the Eclipse.
Lucie's telescope was the "Coronal Imaging Polarizer (CIP)" from Aberystwyth University. Here is a poster outlining its results from a 2020 eclipse: ras.ac.uk/sites/default/files...
Print your own Parkerscope stickers: www.dropbox.com/s/ljbzzu46gab...
This is the excel file with all my data from the video: www.dropbox.com/s/5nxlx9otc7g...
Parkerscope code is over here: github.com/standupmaths/parke...
I was using the ALX-1309 USB Logging Light Meter
atp-instrumentation.co.uk/usb...
Huge thanks to my Patreon supporters. They paid for all the snacks Grant ate during the very long drive. / standupmaths
CORRECTIONS
- None yet, let me know if you spot anything!
Much filming by Greg Foot
Additional filming by Alex Genn-Bash
Editing by Christopher Brooks
Parkerscope design by Nicole Jacobus and Alex Genn-BAsh
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson
MATT PARKER: Stand-up Mathematician
Website: standupmaths.com/
US book: www.penguinrandomhouse.com/bo...
UK book: mathsgear.co.uk/collections/b...

Развлечения

Опубликовано:

5 июн 2023

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 915

@Rubrickety Год назад

Missed opportunity: if you’d done your simulations with a square sun and moon, you could have used the deviation from your actual data to calculate pi.

@chrishillery Год назад

Oh this MUST happen.

@Bibibosh Год назад

Did someone say flat earth? Ya'll understand the whole idea of an eclipse happens because the earth is FLAT!!!! THINK ABOUT IT! if the earth was like ya'll say "a ball" then how the the frig can the light from the sun be blocked? My hand is flat, and when the light is to bright I use my hand not a ball to block the light! Also im 34 and never seen an eclipse in Australia - Queensland! I'm starting to doubt they even exist. Never have I seen the day turn into night! Never have I see totality . Never have I see the moon ball pass over the sun ball! It's all jargon to my knowledge, AND EXPERIENCE AS A HUMAN ON THIS EARTH!

@damianwims Год назад

IT'S EXACTLY 3!!!!

@yuvalne Год назад

@zombieregime Год назад

Well first we need to assume a spherical plasma in a vacuum. .... 🙄🤔🤨🤔😳 .... ....Uh, yes. Very good. Moving on, step two....

@be_an_rm Год назад

"I removed the outliers, I just straight up deleted them" Matt used the one simple trick statisticians don't want you to know

@perigeedynamics5941 Год назад

CompSci's would have filtered that reading out of existence as well. Can't blame 'im lol.

@mikefochtman7164 Год назад

But unlike some shady folks, Matt was fully honest about which data points, what he did, and admitted to it.

@michaelolson1211 11 месяцев назад

Actually, as a statistician, I can tell you this is done more than you think. If there are meaningless points like those, they can mess up the real, valid data. For example, this data appeared pretty nicely, but data usually needs to be smoothed. Outliers will really mess that up, so they need to be removed. It's not something we try to hide - it's just part of the process.

@CarbonRollerCaco 11 месяцев назад

In fairness, he could do that because he already knew why they would exist.

@marimbaguy715 Год назад

Doing the math on that title was fun. "0.000001 megapixel... so since a megapixel is a million pixels, that means... [counting] ... 1 pixel? Yeah, that sounds like a Matt Parker video."

@squidward5110 Год назад

Wow you're a fast counter

@altfist Год назад

The Parkerpixel

@chughes156 Год назад

Just did exactly that 😂

@jeremiahbullfrog9288 Год назад

@@squidward5110 How long does it take you to count to 1? 😉

@squidward5110 Год назад

@Jeremiah Bullfrog bro wtf I was in the 0.006500s but now I lost my place and have to start over -_-

@EvilEelofSteel Год назад

The lines went up, because your tube was filling up with photons. You should have drilled a hole in the lower end for them to fall out.

@BaseNAND 8 месяцев назад

Next time bring a handheld vacuum cleaner!

@smartereveryday Год назад

This is actually amazing.

@qbcd 11 месяцев назад

how does this have no replies

@asaadalsharif7832 11 месяцев назад

22:22 3Blue1Brown, what are you doing here smartereveryday, I think he needs to lengthen the tube, and he shouldn't cut the tube.

@DanielCopelandMD 11 месяцев назад

Seriously! Also, I love your channel, too! Thank you both for making us all 'smarter every day'!

@LightPink 11 месяцев назад

Please don't beat your children 🙏

@AndrewJonkers Год назад

I feel sorry for the production crew who fancified the cardboard tube only to have it all hacked apart for transport and fitting out 😂

@YT-Lucas Год назад

And then to have the experimental results affected by the shorter tube... 😢

@davidgjam7600 Год назад

That's showbiz baby

@niceguy191 Год назад

I don't understand why the other section wasn't slit so it could fit inside and then act as an extension when reassembled on site? What a waste

@wbfaulk Год назад

I don't understand why it wasn't painted black on the inside.

@AndrewJonkers Год назад

I guess that is why he has a career as a mathematician 😂. Love the channel by the way, only having a lend in the nicest Aussie way. Actually unless you track the sun with the tripod, a shorter tube will be less biased in the result.

@jtd8719 Год назад

11:45 This is why you paint the inside of the tube black. And install the light meter at the bottom of the tube rather than at the objective end. (Never change, Matt.)

@WHAT_is_not_available Год назад

This was baffling to me. Why not paint the interior black and put the sensor at the bottom???

@thumper5555 Год назад

And paint the inside black, and cut the end of the tube at a slant, kind of like the brim of a baseball cap. so that the lower part of the end of the tube is always in shadow.

@chuckygobyebye Год назад

Dude's a mathematician, not a physicist.

@NkThrasher1 Год назад

It's possible that putting it too low in the tube might lower the available light level down to a place where this sensor wouldn't give as good of a result. But it also might resolve his dynamic range resizing spike event to keep it in a consistent range... ...feels a little too official for a "give it a go" tube

@QuadraticPerplexity Год назад

Putting it too low would make it measure just one patch of sky, which changes during the day. Averaging out a larger area does seem to make sense. It annoyed me though that they hadn't taped over the slit in the side...

@MichaelStephenFreitag Год назад

There is something fundamentally hilarious about Grant Sanderson just strolling through your shoot, just casually talking over yours 😂

@78Mathius Год назад

I am sure that was planned but it was fantastic.

@gehrehmee Год назад

I need very badly for Grant Sanderson's video, when posted, to show him wandering through Matt's shot from the other POV.

@karlwaugh30 Год назад

genuinely cracked me up...

@estherpettigrew3042 Год назад

"...if you want to do something unique now, [unintelligible] you have to travel all the way around the world, make sure you're the ONLY RU-vidr here making a mathematics video..." LOL Clearly planned. Nicely done.

@babyeatingpsychopath Год назад

I'm not sure if Matt is stalking Grant or the other way around.

@not_David Год назад

21:35 "you don't need fancy equipment, you just give it a go" -- I think this sumarizes succintly why Matt is one of my favourite educational youtubers out there.

@zyansheep Год назад

cool seeing you here, I love your videos!

@not_David Год назад

@@zyansheep wow Thank you! Matt is definitely a massive inspiration for me even if our video style is pretty different haha.

@mikefochtman7164 Год назад

One of my favorite Star Trek TNG memes, Picard quoted, "You may test your hypothesis at your earliest convenience." Translation, 'give it a go". :)

@not_David Год назад

@@mikefochtman7164 more life lessons from TNG

@L0LWTF1337 Год назад

Matt is like a toddler next to his wife holding up his Parkerscope: "Look mommy, I am a real scientist just like you!"

@stickmasterlukeRBX Год назад

The data is in! is dark when e-clips

@thatonedynamitecuber Год назад

e hasn't clipped yet

@proloycodes 11 месяцев назад

he would call his wife WHAT?

@aceman0000099 11 месяцев назад

@@proloycodesoh he would for sure... 😈

@RFC-3514 Год назад

Ah, *a true Parkerscope,* with the sensor near the _front_ (instead of at the back, where it should be), and the _outside_ painted black (but not the inside, which should be - or, ideally, flocked).

@ozradek1 Год назад

and despite those mistakes he got results, well almost.

@RFC-3514 Год назад

@@ozradek1 - Well, technically, as long as the light meter was turned on he'd get results.

@ozradek1 Год назад

@@RFC-3514 meaningful results. almost, like the famous Parker Square

@PetCactusA_HarmlessLittlePrick Год назад

And set the scope against the fence in the background to eliminate the passers-by problem.

@kylerice5226 Год назад

The shot at 5:30 of him comparing it to the proper kit, and seeing it pointing in the opposite direction had me cracking up. 😂

@IMarvinTPA Год назад

It has me thinking of the derpy hydra meme.

@Septimus_ii Год назад

Choosing to observe an empty patch of sky really added to his solar astronomer clout

@vigilantcosmicpenguin8721 Год назад

The Parkerscope doesn't need to follow what the other telescopes are doing!

@InShortSight Год назад

@@Septimus_ii There are no empty patches of sky. There are only patches where we cant see anything yet... because it's daytime and the sun is out.

@AstrumG2V 11 месяцев назад

Big Toph putting up posters vibe XD

@ClaudiaCarranza1 Год назад

😂The 3blue1brown cameo was peak parker

@aikumaDK Год назад

I wonder how many tries that took. Matt barely flinched.

@ChrisBreederveld Год назад

Are Matt and Grant bffs now?

@ClaudiaCarranza1 Год назад

@@ChrisBreederveld I ship it.

@jamesmnguyen Год назад

@@ClaudiaCarranza1 Don't tell his wife

@awboqm Год назад

I was looking for another video and thought RU-vid was doing some sort of glitch by playing two video’s audio together

@GregorShapiro Год назад

Should have lined the inside of the tube with black velvet to absorb any "stray" (off axis) light. Shield the ParkerScope V2 sensor with a tube that is black, inside and out. Or set it way at the bottom of the tube (that has been lined with black velvet).

@broncogrizz Год назад

Yeah, I don't know why he didn't just put it at the bottom of the tube.

@Undy1 Год назад

@@broncogrizz I was gonna comment on that too, but then I remembered that this is a Matt Parker video and I think that's a good enough answer to that question.

@donsample1002 Год назад

Also set it up on an equatorial mount, and rotate it to track the same spot in the sky relative to the sun. With a high precision instrument like the Parkerscope this could be done by just eyeballing the orientation of the tripod, and manually rotating it by 1 degree every 4 minutes.

@bigwibble6 Год назад

but that would make him an almost physicist rather than a mathematician, so that would be wrong

@1234macro Год назад

@@donsample1002 An equatorial mount might not be the right choice in this case, as he is recording the ambient brightness of the atmosphere. The scattering and brightness changes between the horizon and the zenith. The best solution is probably to record the previous day with identical conditions.

@marfrde Год назад

the jump at 3999/4000 is a common spot for 4000 counts multi meters to switch ranges.

@zesox256 Год назад

14:10 yes, we can see big jumps an all the occasions where the sensor overstepped this range and only on those:😌 11.02 11.45(ish) 12.12(ish) on the position change it jumped from 12000 to 3000, so it also jumped over the 4000 mark between two measurement steps, and 12.24(ish)

@wizard-pirate Год назад

Probably same Intercil chip as in the cheap 4.5 digit meters

@Jo_Wick Год назад

That 3B1B cameo really caught me off guard. I had just opened another RU-vid tab and moused over another video, which started autoplaying, at the exact same time as the audio cut-in. I switch back to this video, see nothing on the screen, and wonder what the heck just happened lmao. Speaking thereof, You both are exemplary maths RU-vidrs which are the gold standard of your field. Time and time again, your completely different personalities offer the right combination of entertainment and teaching moments that brighten my day. Thank you.

@dstrctd Год назад

Your viewer looks more professional than ours. My kids and I built a viewer with a 5000mm focal length (it projected about a 5cm image onto white card). When we first tested it in Exmouth we were worried about the two dark spots in our image, but after cleaning the lenses thoroughly and rotating the viewer and discovering the spots stayed the same way up we realised the spots weren’t on the lens they were on the sun.

@TheFrewah 3 месяца назад

Sometimes, you see how the sun sets on some films and sometimes you actually see the spots on the sun.

@matthewmartel9295 Год назад

Loved the cameo from Grant at 22:24

@nk4j272 Год назад

Who's that?

@nk4j272 Год назад

Oh Grant from 2 blue one brown. Knew voice sounded familiar.

@glasswingbutterfly Год назад

@@nk4j272 Please tell me that was a deliberate Parker approximation of Grant's channel - 3Blue1Brown.... 😄

@andylarson6877 6 месяцев назад

That was AWESOME "only RU-vidr here" 🤣🤣 👏👏

@charlievane Год назад

you should've got 3 such telescopes pointing in 3 different directions and triangulate the sun's position & movement from the data

@m.sierra5258 Год назад

Great thing is you don't even need an eclipse for that :P

@DuelScreen Год назад

Next eclipse plan!

@cpu_1292 Год назад

@@m.sierra5258 but where's the fun

@Codebreakerblue Год назад

So in total it'd be a... 0.000003 megapixel telescope? :P

@vigilantcosmicpenguin8721 Год назад

It's a three-pixel interferometer!

@fsodn Год назад

6:45 I would like to point out, as a published scientist, that many experiments have significant tape and glue as integral parts to them. In my graduate work we often made a point that our apparatus had a C-clamp somewhere in it. Experimental science where you're only ever building one of something has a place for tape and glue.

@ford9501 Год назад

I worked at a radio observatory... many things were still held in place with tape or zip ties that hadn't been changed in at least a decade. Like you said, experimental science and one-offs make for interesting choices and there's always something else to fix or chase. We used to joke that if you called something an "interim" solution, it was guaranteed to outlast the telescope. There was an 'interim' spectrometer that had been put in place decades ago and became such an integral part of the system that it was never taken out.

@Karagoth444 Год назад

From making my compsci masters dissertation I took away that any experiment only has to be clean, precise, proper, and perfect at the thing you are experimenting with, everything else is hacks, glue, hammers, sweat and blood just to make sure that the proper bits are perfect.

@iveharzing Год назад

@@ford9501 like that one famous quote: "There's nothing more permanent than a temporary solution."

@tomkerruish2982 Год назад

The prototype LIGO at Caltech back in the eighties had dampeners composed of alternating lead blocks and... racecar-shaped erasers, bought from a local store.

@likebot. Год назад

It ain't science without a twist-tie or cello-tape somewhere.

@heijd Год назад

Matt: "We waited until the end of the eclipse to get all of that delicious data!" Also Matt: "It's symmetric anyway, so let's just use the first half"

@Frank-dd5nq Год назад

A wild Grant hass appeared! 22:22

@Quillslash Год назад

8:45 the fact that he counted every single pixel in these circles by himself and then calculated the percentage is some real dedication

@NutchapolSal Год назад

i seriously do not know if this comment is serious or joking

@Finat0 11 месяцев назад

@@NutchapolSal think its a joking comment

@jimbobur 10 месяцев назад

Being able to deduce something so complex and fundamental like this with such simple equipment is why I decided to study physics at university.

@vonriel1822 Год назад

13 seconds in and I already appreciate the use of megameters

@watfordjc 11 месяцев назад

300 Mm/s is a speed I can actually remember.

@Ausecko1 11 месяцев назад

don't worry, I used to drive 1.6Mm from work to home, and I'd never dream of thinking about it any other way (of course the speed limit of 0.11Mm/h didn't help)

@MrJoescmoe Год назад

I'm not 100 percent sure, but I think you were dealing with Binary Coded Decimal, which may seem ridiculous, but it was heavily used in early computers and embedded devices (e.g. 6502 processor) to make conversion to and from decimal easier. Processors had specific circuits to handle arithmetic with BCD and you could convert from a digit's ascii code by simple subtraction and back to an ascii code with addition. My guess is that a lot of lower power, and real time devices still use them to avoid expensive conversions.

@alsmoviebarn Год назад

It's definitely BCD, I thought that as soon as he said "base 10 but encoded in hex for some reason". I 've worked with low power embedded systems, that often don't even have the luxury of a BIOS to handle input/output for you, you have to roll your own IO stuff. BCD is a neat way to display base 10 numbers in this case, as each digit is stored in its own byte, so displaying them is trivial. The Z80 CPU even has a dedicated instruction to correct the A register after BCD addition.

@billr3053 Год назад

@@alsmoviebarn Yes, the 4-bit add and half-carry instruction, undocumented in the code space table.

@0Zed0 Год назад

That was my first thought heard it. I first learned of BCD when I started working on IBM mainframes some 35 years ago, they actually had instructions to work directly with it.

@mikefochtman7164 Год назад

@@billr3053 Not sure what you mean by 'undocumented'. The z80 manual that I had waaaayyy back in the 80's explained that BCD math was performed by performing a regular 'add' with the accumulator register and then 'daa' to adjust the results. The 'daa' opcode was specifically created for BCD math.

@deviatefishy Год назад

Your team really Parkered it.

@MrSJPowell Год назад

Suggestion for next eclipse: put the sensor deeper in the tube, and paint the inside of the tube a matte black (Or Matt black). This should make the ambient light from people walking by less of an issue. Also, instead of doing a linear approximation, could you take a baseline brightness curve from the day before or after from the same location, in the same direction (assuming similar weather), and then subtract that from the day of the eclipse?

@bigwibble6 Год назад

Matt black!😁

@NeatNit Год назад

The compromise is that there's less light in total and you end up looking at a smaller part of the sky, meaning there'd be more noise and a bigger effect from the specific pointing direction. Still, I mostly agree that it's way too close to the opening of the tube. At first I was sure that he was going to put the sensor in through one side but have it pointing to the other side for exactly this reason.

@KizulEmeraldfire Год назад

I personally suggest using Stuart Semple's "Black 3.0", the blackest black. :) It'd guaranteedly absorb ALL of the stray photons.

@johnladuke6475 Год назад

I think he did alright the way it was, with the inside painted a nice approximate shade of Parker Black.

@Marconius6 Год назад

To go an extra step, since the gradient on the simulated Sun is based on a u value, you could now try to find the u value closest to the actual measured data. Which would provide further information into how thick the photosphere actually is.

@trizgo_ Год назад

23:55 the excited jumps from Lucy warm my heart

@sahasananth987 Год назад

What jump?

@dagordon1 Год назад

Timelapse at 11:05 , like a happy kid😊

@avoirdupois1 Год назад

I love how chuffed Matt is with his research. It's that enthusiasm that inspires me to try things like this.

@liamhurlburt9794 11 месяцев назад

Moments like this are why I love science! The odd times you're just screwing around with some idea or some equipment and all the sudden you realize you can, with the right data processing or novel use of existing tech, accomplish something in a way that hasn't been done before... it sends shivers down my spine, every time

@atkelar Год назад

Optics: nope... I'd have gone for "Optics NOT made by Zeiss" or something similar 😇 - It would probably work better if the INSIDE was painted black. I think the "walking by changing" is the reflected light from the inside of the tube...

@JYMBXL Год назад

I think the inside of the telescope should have been painted with Vantablack. Which would have make the Parkerscope one of the most expensive on the beach that day 😋

@Nefville Год назад

Vantablack can't really be exposed to air or touch. It won't last long. Its a forest of nanotubes and there can be a domino effect that causes nearby nanotubes to fall over and ruin the effect.

@KizulEmeraldfire Год назад

I'd go with Stuart Semple's "Black 3.0" instead. It's a darker black than Vantablack, and also isn't toxic like Vantablack is. :)

@Aesculathehyena 8 месяцев назад

@@KizulEmeraldfire Toxic to health or toxic to art?

@unpaidintern6652 7 месяцев назад

@@Aesculathehyena both. Vantablack is a bunch of vapor deposited carbon nanotubes. Funky carbon molecules arent healthy

@bmdragon Год назад

That little teaser for 3blue1brown at the end, lol

@phizc Год назад

7:50 some more terminology 1st to 2nd contract: penumbra 2nd to 3rd contract: umbra 3rd to 4th contract: penumbra 10:00 the tapering off is called limb darkening. 10:20 - there you go! 10:50 Since the sky is mostly cloudless, Rayleigh scattering is dominant. If it were overcast, Mie scattering would have been most obvious, and the Solar eclipse would be kinda boring😄

@ICanDoThatToo2 Год назад

Apparently it's all called "eclipse town."

@SkillTimO Год назад

Are you on tour with 3Blue1Brown or something?!

@subliminalvibes Год назад

Inside of the tube should have been sprayed black also. 👍😎

@wspolczynnik_poissona Год назад

Finally some data proving it's darker during an eclipse than before or after it!

@vigilantcosmicpenguin8721 Год назад

There has been hardly any research dedicated to answering that question.

@philwheatley5057 Год назад

I hope you get to repeat this with all the learning from this. Would like to see a 1 pixel movie of the data. Just a visual idea of the change in light level over the whole eclipse.

@thepawn08 Год назад

Is there any way to calculate pi with your scope since the sun is a circle?

@Kaiasky Год назад

If you live in the USA, in spring 2024 there will be an eclipse going from Texas to Indiana. If you get a chance, I highly suggest going. You'll need to start planning now, because hotels/etc can be hard to come by. But this is a once in a lifetime experience that it's absolutely worth taking some time off work for.

@Dimprecator Год назад

If you do not live in the USA the eclipse is still going to be there , same place and time

@CraigClarkson Год назад

Matt, consider this an invitation to visit Waco TX and Baylor University for an all day festival centered around the full eclipse. For reals... Reach out to me and I'll help coordinate your visit and try to get you plugged in with the city and the university.

@trigonzobob Год назад

Thank you for giving it a go and working it out.

@kevinbuiied Год назад

I love all the 3B1B cameos in your videos. It's great.

@curlybrace314 Год назад

See, now I want to build a Parker scope of my own for the 2024 eclipse

@JAM0LO Год назад

Hope you enjoyed your time in WA! I remember trying to look at the eclipse from the office down in Perth, best we managed was seeing little crescent shaped shadows through leaves and pinholes and stuff.

@robmckennie4203 Год назад

Doesn't it feel weird to say "hope you enjoyed your time in WA" to someone who was born and grew up in WA? 😅

@carl11547 Год назад

When was Matt in the US State of Washington?

@DerekHartley Год назад

@@carl11547 WA means Western Australia.

@carl11547 Год назад

@@DerekHartley I know. It was a joke. I will be you $1000 (US or Australian) that Dr. Oliver got it.

@luismijangos7844 Год назад

Kudos to your production staff. Amazing work there!

@jeremiahbullfrog9288 Год назад

LMAO at the "only math youtuber" segment

@kashgarinn Год назад

The proper thing would have been to have the camera in place the day before or the day after (hopefully with the same weather conditions), record the intensities for the time period an compare the differences, because you do see intensity changes from the sun moving in the sky, and the only way to compensate for that is to record the same time period the day before or after.

@neilgerace355 Год назад

I saw the eclipse from Pebble Beach (near Exmouth) but I didn't think of making a pinhole camera or anything. I got a great shot at totality with the two cruise ships in silhouette, showing that the sky looked like it does at sunrise but all around the horizon, and not just in the east.

@evanbarnes9984 Год назад

Love the Grant Sanderson cameo! I actually got to meet him recently! Definitely a peak moment as an ex- math teacher

@tentenbits Год назад

The grant fly by.. just absolutely brilliant. Take my thumbs up.

@familyguy0398 Год назад

I've always wondered when doing long drives across Canada whether it was proper or not to use the term "megameters". I feel validated now! Thanks!

@johnladuke6475 Год назад

If you didn't remember that one from school, you probably also forgot decameters and hectameters, the 10x and 100x units. Don't mix up your decameters with your decimeters, though!

@Mrch33ky Год назад

Spikes could also have been birds or insects winging by. Personally, I would have placed the meter much further back in the tube and painted the inside of the tube flat black. But it still worked out pretty well. 👍

@grahamcollins6810 11 месяцев назад

Great video. As an aside, the green lines on your eclipse Matt T-shirt made my eyes go fizzy!

@OrigamiMarie Год назад

Okay I love the walkthrough at the end by 3B1B 😆

@Gersboxers Год назад

Might be fun to use that data and a couple of models to do some Bayesian analyses and Markov Chain Monte Carlo to find which model you suggested works best + find the ideal parameters for each. That way you can quote some Bayes factors on how much better one model is than another! It would be a fun project!

@marzum1929 Год назад

Great video as always! Suggestions for the next time: Let the tube be longer or put the Luxmeter deeper in it to the closed end; the inside of the tube maybe painted black too and point the tube north in the northern hemisphere or point it south in the southern hemisphere all for preventing any spikes during measureing and/or shadows inside the tube. greetings from Germany :)

@Windeycastle Год назад

Thank you patreons for enabling this silliness we all enjoy watching, and learning from!

@SeanHodgins Год назад

Ah, fine. You beat my 0.001 megapixel DIY digital camera sensor.

@unvergebeneid Год назад

9:59 your LaTeX-fu is very disappointing, Matt. Should've used \left and ight on those brackets!

@Utesfan100 Год назад

This whole video was to set up the Parker solar probe joke.

@clifsportland 11 месяцев назад

one of your best jokes there at the end, Matt. Nicely done!

@MinimumViablePicnic Год назад

Really enjoyed this thanks

@JohnDlugosz Год назад

I used a fancy light meter back in the day (late 1980's), before they were built-into cameras. I had two white covers for the sensor: a hemisphere, like the one you have, and a flat one. The hemisphere integrates the light from all directions. So, it's looking at the reflections on the side of the tube. You would be better off with the flat one, which looks _straight_ down the tube. In that case, you don't need much of a tube; just enough to prevent direct light from falling on it. In fact, like the baffles you see on normal camera lenses, or the bill of a baseball cap.

@TroyRubert Год назад

I can’t believe someone hasn’t uploaded a 8k HDR footage of a total eclipse here on YT yet.

@jamesmnguyen Год назад

Sounds like prime real estate for you if you can get the equipment

@aronsarmasi2368 Год назад

Thank you for not fudging the data, that's good science :)

@moustholmes Год назад

Grant is now the Stan Lee of the stand-up maths channel with a cameo in the last two videos

@notmyname327 Год назад

That graph match was so satisfying. I loved this video

@SimonZerafa Год назад

Matt: You need to calculate the limb darkening value from your data and then write a scientific paper with your results 😀👍

@5ucur Год назад

That ending shot, along with the patreon supporter credits, was amazing.

@PhilWaud Год назад

Fascinating experiment, and a great excuse for travelling all that way! Thanks for a great video!

@funkenjoyer Год назад

pretty weird they painted it all black on the outside but not on the inside, it would reduce the amount of the light reflected from the sides of the tube

@rmsgrey Год назад

Meanwhile, painting it black on the outside maximises the temperature change of the tube in the sun.

@rubiksmath7938 Год назад

My family drove 13,000km from Brisbane and back over 3 weeks to see this. Totally worth it. I actually was in the same place you were and was hoping to see you there but clearly I am blind..... or you were hiding too well.

@Nazuiko Год назад

Totality worth it*

@darktemp_de Год назад

Great video, I liked just about everything about it. The idea, the implementation, the conclusions and the presentation. Awesome! I just wonder how different the curve would look like if the scope would actually track the sun :)

@kullen2042 11 месяцев назад

I loved it. It shows that massaging your data nad understanding what you are doing is so valuable :D Some minor points: 1. Why not have the parkerscope a deeper tube / the sensor farther down in the tube? It might help shutout noise from like people walking by and everything without having to resort to optics ;) 2. I would probably try pointing the parkerscope at astronomical south (or north on the other hemisphere). Then the point in the sky you are looking at might a bit easier to track, because it actually doesn't change with the rotation of the earth. Of course the angle of the sun in the atmoshpere still changes, so you might still have to pull some models to correct for this... Of course there are alternatives, but without having the parkerscope follow a point on the sky I dont really see a better option tbh. Looking forward to the next ecplise ;)

@TimothyWhiteheadzm Год назад

Surely if you put the sensor a little further back and painted the inside vanta black or the darkest mat black you could find, you would have much less problems with people walking by etc.

@yacobgugsa2524 Год назад

Glad to see Past Matt rocking the beard again. "How long did that take to film?"

@thomilo44 Год назад

The podcast had me waiting for this

@EnemyOfEldar Год назад

Loved the Grant cameo at the end. This was a great "giving it a go"!

@JBLewis Год назад

It's a real shame that someone cut that tube down so much. 😁

@Roxor128 Год назад

Yeah, might have been less vulnerable to the shift in the sun.

@davethefish5 Год назад

Wooo

@creativebuilders1117 Год назад

1st!

@ruperterskin2117 6 месяцев назад

Cool. Thanks for sharing.

@ericgoldman7533 Год назад

One of Matt's best goes to have ever been given. I'm actually surprised the shortness of the tube did not affect the results more.

@flotsamike Год назад

Probably would have had better data if you didn't use the cardboard tube. You don't really need to collimate for one pixel. Just put your detector over by the fence, away from where anyone's going to affect it Especially if you had collected during roughly the same time the day before and the day after so you could subtract out the effects caused by the Earth's normal movement around the sun so you could have subtracted that out and had a better defined inverted peak. Assuming it's normal Western Australian weather and are the same number of clouds on each day.

@Arnavion Год назад

Also if the goal was to *not* have the sensor point directly at the sun, it would've been okay to just point it at the ground and measure the reflected light intensity. Though it would look even less like a telescope then :D

@fewetube Год назад

@@Arnavion Make it look and point like a proper telescope, but leave the lower aperture open, the upper aperture closed and flip the sensor.

@rmsgrey Год назад

@@Arnavion Trouble with pointing at the ground is you're even more likely to pick up on passing shadows.

@boRegah Год назад

There is probably no Scope imaginable _more_ Parker than this

@reidflemingworldstoughestm1394 Год назад

Park, Parker, Parkerer, Parkest.

@stanmacdonald1073 6 месяцев назад

It's amazing how much "science" you were able to deduce from your simple experiment. I've found analyzing my failures yields much more knowledge than analyzing my successes.😊

@viewera Год назад

I love that strange fella who snuk in at the end

@srwapo Год назад

How'd you know I'd be watching this in the FUTURE? Are you psychic???

@huonvalleyescapes1759 Год назад

Glad that the eclipse was a good experience for you Matt (and RU-vid viewers). For me, it was a demonstration in corporate greed exploiting a natural event. After driving 5300km from Hobart to Exmouth, I found that Exmouth council, corporate interests and the police, were working together to extract ludicrous $$$ from this. For me to be allowed to stay within the area, it was going to cost me minimum $500 to book a 3m x 6m space for my campervan, in a gravel car park (minimum 4 nights at $125/nt). Road blocks were setup on the highway and local roads 2 days before the eclipse and anyone not having paid accommodation was evicted from the entire peninsula (150km) from the totality zone. Rather than participate and thus give my tacit approval of this exploitation, I went elsewhere. There will be other eclipses.

@DonNoddingPolitely Год назад

As a Western Australian, I feel your pain man. But believe me when I say that if the accommodation restrictions weren't in place, noone would have got any science done because of all the yobbo's that would have turned up.

@metamorphiczeolite Год назад

Matt Parker, you are an international treasure. Thanks for your videos!

@MrNionys Год назад

patreon link points to this video

@jackgreene491 Год назад

Time is circular

@eansengchang6840 Год назад

do you like chicken

@mikeybhoutex Год назад

11:05 - The various lil' hops by Lucie is just the cutest thing. *boingboingboing* 😄

@ffggddss Год назад

A Parkervid all the way! Right up to the final touch at 22m22s, "... and these days there are so many incredible maths RU-vidrs out there doing all sorts of videos ..." while Grant Sanderson walks by behind him, doing a YT video with his iPhone (?). Fred

@Jcrum5th Год назад

Could you have positioned the ParkerScope™ inside the tent? That would have smoothed the data a bit. Could you also have collected the same set of data at the same time a day earlier (a job for past Matt) and subtracted that from the eclipse set, thereby eliminating the effect of the motion of the sun in the sky (commonly called flat-field correction)? Your work is an excellent example of citizen sciencery (the act of doing science?).

@creativebuilders1117 Год назад

9th

@paulaedgson2246 Год назад

@cheeseburgermonkey7104 Год назад

Im not sure what the intentionally confusing representation of 1 pixel in the title was meant to do

@claytoncoe838 Год назад

Typically the resolution of cameras are written in megapixels

@rikdegraaff891 Год назад

Be funny

@Redditard Год назад

To make us count the zeroes

@nicksamek12 Год назад

Meant to spawn comments and improve engagement, mission accomplished 😎

@Redditard Год назад

@@claytoncoe838 why didn't I thought of that 🕳️

@kioshiki4519 Год назад

Awesome, nice example of trying something out. If I could do a fraction of what you do this year I'd consider that a win. You'll probably done more interesting tings in the next couple weeks let alone the rest of the year.