How do touchscreens work? 

you seemed to have a lot of fun in this video :D

Surely this must be just part 1... the emoji isn't sent yet. You need to follow up withe actual transmission over Wi-Fi/cell towers, etc until the emoji lits up on the other person's screen.

It would be cool if you followed this with a episode about the transmission. Because pseudo noise encoding is mind blowing.

Did I said that I love you?

Can you do the PHYSICS part of sending and receiving text messages, and watching youtube

Several days walk away LOL

I think that cavemen might have developed written language from representative pictures, not the other way around. .. yes, dad, we are all Devo!

For the sake of your sanity and enlightenment, I am imparting unto you this playlist: /playlist?list=PLZHUYcZse3nMLlJ0WoXixR4yCSilV4hud

“I told him, but he forgot.” Ignoring a text message is no different from that. If you want to explain how you told your mate, that can go many ways, depending on whether you want to explain what you did, how you did it, how it works, how it is supposed to work, or why it doesn't.

Gavin and Burnie do have the best debates right?

TheGreatMunky you can see yourself out now.

- sent from my smartphone.

oh my gosh she replied 😱😱😱😵 you just made my day ❤

She didn't understand what you really meant

I just did......

@@MajedAY u r really lucky! 😇

haha lol

I honestly don't know if its poop or ice cream, I didn't know emojis were so confusing lol

But what if I want stinky ice cream?

😂

I think I heard that it is Ice cream but everyone thinks it is poop...

Thank you! With limited time, it's hard to get down into the details, but the most interesting part to me is how your finger can affect a capacitor enough to control a screen.

I to am an engineer , and this blew my mind how simple but complex it has been put together

I did! 😊

Same

@@LovecraftianGodsKiller I watched this video once many times ago but is watching it again for a reminder.

Lol same

☝

It's a very good channel.

There's a LOT more I'd like to get in to. I used to program and I'd love to talk about code, but I haven't figured out the right way to tie it in to physics. Suggestions welcome!

could you maybe talk about how much energy from a battery is used in doing something like calculating 2*2? it would be interesting to see how the energy used to do a calculation through programming compares to the energy a human uses to do the same. another way is to talk about a simple adder circuit and show how to do math using simple on and off switches with current going through them. i look forward to seeing your future vids :)

Physics Girl Maybe a mini series about how physics uses computers and particularly really smart code to do physics? Talk about something like the LHC, or computer simulations. I think especially computer simulations would be eye-catching at least. That way you get to talk about both physics and the code that we use to figure out what the heck happened in that little big bang we just made.

nope, nowhere near half a billion calculations to do that. that would mean a 1ghz smartphone would take half a second to display the emoji after you requested it, and it's obviously not nearly as long. in fact, if correct for the touchscreen and screen input delay, the delay would be in the order of microseconds. more like 50 thousand calculations. and that's low level binary gate (true or false) operations.

How about explaining the amazing physics behind RAM row hammering works. You get into electromagnetism, processor instructions, and more!

Impressive! I think you're about right. Maybe 2 hours?

LOL.. well thanks for responding... what I meant to say is, GREAT VIDEO!!.. You explained the way the Touch Screen works!! with great diagrams!!.. THANK YOU! :) ... you really are a great presence here with all that you share with us.. I wish all the best to you and for you. Keep up the great work... you'd be surprised at the size of the SILENT Majority that don't give you the feedback you deserve.. but THEY ARE ALL THERE.. ..:) Peace always....

Felt like watching the whole video again, with attention to sunlight and all those details!

@@ptyptypty3 Finally saw one proper comment ever on RU-vid... Very nice observation... BTW I took 15min and 10 replays to see the things you saw...

@@gayatrisavarkar8196 true

Dianna

Correct. Not to mention. Shhh.

Don't forget about scattering theory and things like the orders of a perturbation series for the S-matrix. Can't have cell phones without that stuff.

sorry hardware is better. hardware is always first inside my heart. -the local nerd

It's a great letter. It's too bad English lost it.

It didn't…quite. In shop or pub names like "Ye Old Curiosity Shop" that's not actually a "Y" it's "Þ" and "Þe" is pronounced exactly the same as "the" ;-)

the conductivity decreases with decrease in temperature

Actually something cooler is a better conductor. The reason is more biological. To conduct you need oils and water over you skin. When it's cold the formation of the pores and dry skin makes your skin less conductive.

i think even without oil our body can conduct.

Do you have plans to do the sofa science video thing with Physics Girl? you've already done one with Brain Craft

AJD is right, only metals conduct better when they get colder. Semiconductors and nonmetals *decrease* in conductivity with decreasing temperature, the exact opposite of metal. However that's not the reason, touch screens are capacitive not resistive, you don't even need to physically touch the screen for it to work. Additionally, dry skin is perfectly fine, you don't need oils or water on your skin for the screen to work. Your skin is alive and thus full of water. The reason it may not work is if there is a thick layer of dead skin on your fingers, dead skin doesn't contain any water.

I don't get it.

David Wührer honeycombs like the cereal Ohms like the unit for resistance in a circuit Thank you Ill be here all week

PapaKay I didn't know there was a cereal of named honeycomb. ΩI.

how cell towers work etc

The most fascinating thing to me about cell towers is the structural engineering that goes into the cell network, and all the protocols used to send text vs. relay calls, and all this 💩 I know almost nothing about. So maybe it's time to make that video and learn.

Guitar Lesson im talking highschool level here, not university stuff.

Yea like you could focus on learning with her around

Jabberwocky IKR me too

The restraining order is in the [registered] mail... :-/ #CreepyOrWAT?

You love smart women but do you respect smart women? Probably not as much as you think and I'll tell you why. When I was in college, I knew the material pretty well because I would study for 5 to 10 hours per day, 6 days per week. That's a little less than 1,000 hours per semester, and I made a lot of sacrifices to put in those hours with my class schedule, commuting, and work and so on. Because I was typically ahead in the class, I would frequently explain the material to my classmates. One of them apparently had a crush on me. I didn't know this at the time. He never told me. Never asked me out. Never really struck up a conversation with me. But what he would do is ask me to explain something, and I would obliged to help a fellow classmate out, but while I was standing there using my time to explain something to him that I had spent hours of my life that I couldn't get back learning, and time explaining something to him that I could have spent making my own life easier, he wasn't really listening and learning but standing there spacing out and getting off in his head. He sexualized me and trivialized something I had put a lot of work into and wasted my time for his semi-sexual pleasure. No thanks. I'll take the guy who actually has a little more respect for me and my time.

That's a collab I would love to see

Meeeee