Radio Definition and 671 Threads

can AM radio waves pass through glass been than FM radio waves? please explain why/how and how this can be shown in an experiment thx :)

Im not talking about TVs, but radio astronomy. We receive signals from say a distant star and turn it into a picture, but how?

A friend and I are trying to build a radio controlled airplane, but an LCR circuit tuner would be too heavy. Does anybody know of a way to make a tuner without an inductor coil? Any help would be appreciated.

A radio inductor. Please help! Hello. I am seeking immediate help with a problem I have. Here is the problem: A Radio Inductor. You want the current amplitude through a inductor with an inductance of 4.60 mH (part of the circuitry for a radio receiver) to be 2.20 mA when a sinusoidal...

Hello everyone I was curious if anyone was a user of satelite radio? If so, may you comment on it? I am curious what are the advantages of XM Radio vs Sirrus?

http://news.bbc.co.uk/2/hi/science/nature/3567729.stm

http://www.arrl.org/tis/info/HTML/plc/

sorry for my bad english, but this problem is translated from french. In this problem, i have to make a low-pass AM radio filter using the following information: frequency: 130 kHz Condensor Capacity: 12 nF This filter must be installed in parallel with the synthesisor. It says to use...

I'm in IB math methods, working on a project and I can't seem to figure out what to do with this problem. A radio transmitter sends signals to a railway which run along a straight track. When a set of coodinate axes is used to represent this system, the transmitter is at R(1,0), and the track...

I doubt that my physics teacher (who is coincidentally Mark2711 on this forum) has found out the answer for this question that he was wondering about , so i have decided to take the initative and ask. We know that photons are the quantas of energy in the electromagnet spectrum. Well we know...

If you have a radio and it is tuned to a specific freq, is it possible to find out what that freq is without touching the radio? I have this radio that has a button that tunes to an unknown freq when press. I can't seem to tune to the unknow freq. with other radio. is it special or something...

SO I am doing a Powerpoint for my Science class. Well anyways maybe you guys could help me out a bit. Which kind of bondings to Radio Active Elemenets (actinide and Lanthonide) use, and why? And what is so unique about Radio Active Element. If anyone could respond to this tonight I...

hi all, Can anyone tell me a easy way to create radio waves,micro waves reciver and emiter? I hope someone will help me. -benzun all for God.

i was reading an article about the new RFID tags that could replace ATM cards. these tags respond to query via a radio tranmission. the tag then uses the power that was in the initial radio transmission to reply back to the system. how are the tags using the power from the transmission? can...

it has always seemed incredible to me how little power it takes to transmit radio signals over vast distances,i have read about how these signals are self sustaining, i was wondering how long a signal could retain its information, could it go clear across the galaxy?

hey guys, can you find any links on the web that discusses how a analog radio tuner works... i'm talking about in the level of an electronics and communications engineer...an in-depth study and discussiion would be highly appreciated... is this related to an RL circuit?

http://www.wired.com/news/privacy/0,1848,60408,00.html

What is particle "spin", and does it have anything to do with radio activity? I keep hearing about the "spin" of sub-atomic particles like such-and-such particle has a spin of 1/2 or 1. I heard even some have a spin of 2. And it also seems that I have heard that some radioactive particles have...

Libby's observation that all the carbon in the world's living cycle is kept uniformly radioactive through the production of C-14 by cosmic radiation led to his development of the radioactive carbon dating method. Samples of carbon in the life cycle have been found to have a disintegration rate...

Im not sure of this, but visible light is an EM wave just like radio waves are, right? If I am right, does that mean mirrors reflect all ranges of EM waves, radio included? Also what is it about a mirror that reflects photons?

I'm not sure where to post this. On my FM radio (yes, I am pretty old fashioned), if you tune it to be slightly out of a station or if there is a weak signal or something, you can distinctly here a strange pattern of interference in the background. This consists of a rapid pulsing of white...