Television Definition and 64 Threads

Hey all, I'm working on this question for my homework. Can someone please help me get it under control, I read it and all I can say is 'huh'? In a television picture tube, electrons are accelerated by thousands of volts through a vacuum. If a television set were laid on its back, would...

I was given this problem for homework. Assume you have a television tube that is about 0.3 m from cathode to screen, and electrons are accelerated uniformly through 20 kV – the electric field is constant. How long does it take for the electrons to travel from the cathode to the screen...

i was being ask to describe the energy changes involved in the use of mobile phones and a television i m noot even sure i have fully understand the question, energy change? say in mobile phone, all i can think of is signal wave turns to electric pulse which then changes into...

Hi. I'm trying to find information about the circuit which controls raytracing within a television CRT tube (the circuit which controls the current through the steering coils deflecting the beam up down left and right)... How is this precise raytracing accomplished... what type of circuit is...

http://www.sciam.com/print_version.cfm?articleID=0005339B-A694-1CC5-B4A8809EC588EEDF Guilty! I have the thing on all the time while I'm working. My job tends to be very solitary at times and the TV helps to break the monotony.

1: the science channel is the greatest thing ever invented. If you don't have it get it. 2: the greatest commercial ever, other than the Steven Segal Mountain Dew commercial, is the hp commercial with the dorky looking guy and the picture frames.

http://www.softlab.ece.ntua.gr/~sivann/pub/KFee_Auto.mpg I really like the soothing effects this video has, pretty cool :approve:

Would a television show about mathematics not directed at young children be a good idea? Would anyone watch it? I’m wondering because I’ve seen programs about almost every other topic except for math. The only exceptions I can think of were Square One, a show from the mid 80s to early 90s that...

The electron gun in a televeision tube is used to accelerate electrons (mass of 9.10939 x 10^-31 kg and charge of -1.60218 x 10^-19 C) from rest to 2 x 10^7 m/s within a distance of .053 m. What electric field is required?

I am wondering how much time a person spends watching television a day.. be honest! :wink: BTW with the couple times a week I mean occasionally or few :)

The Dutch physicist Gerard 't Hooft has just posted an article which investigates a way in which trillions of television sets could be utilized to form a black hole http://arxiv.org./gr-qc/0401027 Despite its great seriousness :wink:, the article is a mere 15 pages. In case you wish...

Did anyone catch this? It was on teh sci-fi channel at 10:30p.m. on friday the 19th and then at 1:30a.m. the next day. http://www.scifi.com/onair/specials/#2shocking It was so awesomely funny I can't imagine why they didn't play this during primetime, save the reason it completely destroys...

Did anybody see it last night? I heard only the last couple minutes of it, but what I did hear, caused a lot of questions. I saw the part at the end about the time machine. On how if you sent a elementary particle through many bent light beams, you could travel back in time. How so...

How is it possible that TV detector's work like the ones used by the TV licensing vans, is it by measuring the TV broadcast signals power loss ?