I have spent all day splitting milliseconds trying to figure out why a distributed computer system Does Not Work. Coming back to an analog anemomeme - MOMMM - eter ispure joy. Never change :)
I honestly really love the beaufort scale. At least in germany it's still taught to people learning sailing. Is it super accurate? No, obviously not. But just by looking around you can determine the rough wind speeds and it tells you a lot about how your boat is going to behave. It got extended btw to include land features as well, stuff like bending trees and branches or grass movement
I think the main benefit of the beaufort scale is that it tells you about the wind. Not "land speed", not "relative air speed", not "knots" (relative water speed). Sure, all of those are relevant and interconnected, but the beaufort scale gives are range to sanity check any other measurements/assumptions against. Sure, it is not precise, but that is the point: It gives a ball park that works as a reference point. If your numbers to not add up with the beafort scale, the math and assumptions must be very wrong.
@@creamwobbly I was thinking of a scenario like when you are learning/teaching, the possibility of first going "I think this is a 3Bft" and then quickly checking it with this. Especially when sailing with a laser or a similar tiny sailing boat. So something to use for teaching.
@@creamwobbly there is one interaction you have to keep in mind: If the boat is sailing/moving, the wind speed on the boot will be different then the wind speed on the sea (relative windspeed). The beafort scale it self can not give you relative wind speed. This device can only give you beafort scale when stationary. Next, measure you speed in knots. Then drive you boat down a river system, where the water itself moves indepent of the air; then sail on a lake, where you can actually sail, but also are affect by river currents.
1:56 A variant on the "hot wire anemometer" is used a lot, but most people never see it. Many gasoline vehicles have what's called a Mass Air Flow (MAF) sensor in the air intake, which is used to measure the amount of air flowing into the engine. While the hot air anemometer measures air velocity, the MAF instead measures air mass.
I like your wit … your gadgets and simple format. You’re having fun with this, I can hear it in your voice… I’m sure the wife hears it as well- “silly boy.”
Since the propeller-y thing inside doesn't spin, the closest relative to the device is probably the Pitot design: the dial is a measurement of the differential between the dynamic pressure (where the wind slams into the rear face of the gizmo) and the static pressure (where the air just hangs out, doing nothing, in the little recess on the side). [edited once I got hold of my reading glasses]
Cool. Really makes me wonder how the first makers of such devices even verified their measurements. Seems like Beaufort’s method was probably accurate enough for even me today.
calibrating it with a vehicle on a day with little wind speed seams to work rather well. You can calibrate the car on a track of given length using a clock. Note that you do not need a calibrated speed indicator on the car. You just mark where the needle was and write the calculated speed (or time it took for the given distance) and calculate/scale it later.
my favorite mambajamba is the TSPI device used in aerospace stuff. Collins makes a super fancy (and impressively expensive) mamamamana that goes on a fighter jet and measures with a Pitot as well as correlating a bunch of other stuff. also i've only just now realized that Pitot is a name and not an acronym lol
Belgium is a fantastic place for a short holiday! You can get a train from the centre of London to the centre of Brussels in a few hours. The food is great and the range of beers will blow your mind! Plenty of tourist attractions for science geeks as well, such as the Atomium (you're a braver person than I if you climb the stairs all the way to the top).
Would you be terribly averse to maybe boosting the audio a few dB in future vids? I generally watch them at work of an afternoon when I'm feeling lazy, and every with everything cranked up I find them a bit quiet.
Good to know- I thought that RU-vid would boost it if it was uniformly quiet, but maybe not. I’ll pay more attention in the future.
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@@ChrisStaecker youtube doesn't do that (there are some very quiet audios out there), but I hadn't any issue with sound levels on this video; had volume at about 60% on my phone
@@ChrisStaecker It is a bit low compared to other videos around RU-vid. I'd say you could go up at least 6dB relative to current level in editing/rendering. Broadcast TV has a standard of -12dB for digital audio (where above 0dB would tend to cause clipping), but I believe most RU-vidrs aim for more like -3dB. And some compression can make audio "feel" louder at a similar level. Now of course, somebody needs to invent a device that all RU-vidrs can use to normalize their volumes compared to each other.
On the now disassembled & turned into junk door handles USS Saratoga, we had to get 30knots over the flight deck to launch planes. I guess that's like 35 mph. Bft 7 or so. If I'd had one of these that one day when I foolishly tried to go from all the way aft forward and ended up taking refuge in the island (the big tall thingie on the side of aircraft carrier decks), I'd have known how close I cam to being blown over the side. Probably better I didn't. It scared the crap out of me the way it was. Knowing I was trying to walk into a Bft 8 or 9 wouldn't have made me feel any less likely to not be here to talk about it. Thanks for the video, amigo.
My only quibble, which is ameliorated somewhat by the dog, is that “it’s not precise because this amermeniorum doesn’t start at zero.” Not so! That’s a smarter design because in that limited dial space, emiminating the wind speed nobody cares about (sorry, Calm, but you are not interesting) lets the dial be more accurate with wind speeds people care about. Sadly the inventor was killed when he was testing this in a Bft 10 hurricane and a tree fell on him. Sadly, nobody heard it happen so the cause of his death was ruled “pure conjecture.”
Yes I agree this design is smarter. But surely it is less accurate near zero, right? (Probably should've said "accurate" rather than "precise".) You're right that this allows it to be more accurate elsewhere, where it matters.
@@ChrisStaecker Well yes. But Shackleton always said, “Where’s the fun if the wind’s below One.” Meantime, and this is actually true, George E. Van, the late yachting reporter and veteran of scores of Big Macs (he also sailed on the famed J-Boat “Ranger) used to navigate by the smoke from his cigar.
@@ChrisStaecker I guess it measures dynamic pressure, which is proportional to the square of the wind speed. So for the increase in dynamic pressure from 5 to 10 mph is the same as that between .. erm ... 30 and ... erm ... 31.2 mph?
Air speed does not equal ground speed unless wind is zero. Airspeed indicators in aircraft measure the difference between static pressure via a port on the side of the nose and dynamic pressure via the pitot (pee-toe) tube hung from the wing. Indicated airspeed must be corrected for temperature and pressure to get true airspeed.
@@ChrisStaecker See! The Benford's Law response is just proof of the injustice! After searching to find out what Benford's Law is, I wonder: do random number generators obey this law? 🤔 My guess is that they do not.
Yes ordinary random numbers do not obey Benford's law. If you take uniformly random numbers and then exponentiate all of them (like do 2^x for each one) then you'll see the Benford's distribution. You could say that Benford's law will hold for numbers which are random, but varying exponentially. i.e. random bank account deposit amounts, random youtuber subscriber numbers, etc. Because my subscriber count increases more or less exponentially, I will spend much more time with initial digit 1 or 2 than I will with digit 8 or 9.
