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Jan16-12 Greg Bernhardt
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Apr22-11 05:27 AM
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The aim of this thread is to highlight recent (as in within the past 3 months) noteworthy physics papers that have...
May6-14 04:32 AM
168 190,699
Does any one know how ordinary window glass behaves at different wavelengths? It obviously passes the optical band,...
Jun11-06 04:11 PM
1 8,567
I tried to work out the transmission coefficient and the reflection coefficient for a case similar to the one...
Jun11-03 11:24 PM
2 1,634
In the case of a complex source impedance ZS and load impedance ZL, maximum power transfer is obtained when ZS = ZL*....
Sep24-11 02:17 PM
4 2,118
Hello, I am looking at the following calculation for the reflection coefficient of a transmission line using the...
Mar16-12 06:47 AM
1 1,916
Hello, a beginners question here. Can someone please tell me why transmission lines use two wires instead of just...
Mar7-12 04:40 PM
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If you have a stick and push it from one end, the whole stick moves instantly. You have given the other end of the...
Apr30-09 04:58 PM
8 1,104
Greetings, When I think of light being "transmitted" through air, I have always used the idea that the light is not...
Apr10-14 12:41 PM
3 445
Am getting actually puzzled about some facts from telecommunication. When signal are transmitted from two mobile...
Sep5-10 08:56 PM
2 1,059
In order for us to see something, the light photon needs to be reflected, not absorbed or transmitted? Then is it that...
Nov21-10 05:29 PM
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Not sure if this is in the right section, but I'm not sure where else it would fit. I'm currently researching a...
Jul19-13 11:25 PM
Simon Bridge
1 879
Hi The colour of a solution is the wavelength of the light transmitted through it which is white light minus the...
Jun10-10 03:48 PM
1 1,193
Hi everybody. I have always wondered something and have not been able to get an answer. Let us suppose we have a...
Aug28-12 10:12 AM
9 1,286
Hi, A colleague of mine at work has this idea of using a focusing lens to focus the visible light into a optical...
Nov5-12 01:22 PM
3 685
Has anyone thought of a mechanism enhancing the disintigration rates of α-decay?
Apr4-03 04:48 PM
4 1,796
FYI The Roy Process Patent application, apparatus & theory, which contains completed calculations for transmuting...
Oct22-03 04:10 PM
11 4,593
I am trying to understand the relation between transparency and refraction index. Searched this forum so found and...
Jul12-09 01:42 PM
1 2,425
I was looking at this photo and it got me wondering. There's a person in the photo, who is apparently not moving so...
Oct27-10 10:13 AM
11 1,362
Hi, new here. This came up briefly elsewhere and we didn't have the cerebral fire power to get very far with it. ...
Aug14-11 09:49 PM
7 1,419
What causes water and other similar transparent things to become transparent? Visible light can pass through...
Oct12-09 03:34 PM
10 9,438
Suppose I have 2 lasers. 1 emits light of exactly 500 THz and the second emits light of a frequency exactly 1 hertz...
Jul7-13 08:37 AM
5 652
If I am using radar to determine the distance of an object from my transmission source by reflecting my radio waves...
Feb2-14 07:58 PM
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There is a HUGE debate going on over at another forum i frequent, several people are claiming that their turbos become...
Nov16-05 06:37 AM
24 10,351
Stolen shamelessly - and then subjected to the indignities of paraphrasing - I'm taknig a thread from Whitestar and...
Aug12-05 06:28 PM
15 2,869
Dear all, In modern literature (e.g. metric-affine f(R) theories of gravity), why is the requirement for...
Dec31-08 05:00 AM
Kurt Reichling
0 1,032
let me make it clear this is NOT A HOMEWORK.i am just having a doubt. if there is a rope passing through two parallel...
Feb14-14 03:58 PM
2 371
If a TEM00 output laser source (regarding both cases of single frequency vs multifrequency) is used as input into a...
Jul15-11 12:38 PM
2 1,431
I roughly understand that when we hit a metal rod right into the end will excite longitudinal vibration in the metal...
Jan16-10 09:18 AM
1 3,052
I heard that transverse wave can not travel trough gas and liquid then how can light travel through all the way to...
May12-09 04:45 AM
4 862
A string with a density/length of rho and tension T has an elastic spring with stiffness k at x=0. There is a step...
Feb3-13 04:12 PM
1 507
Ok, so the wavelength is the length between two crests. Is it also the length of a complete wave? (sorry if I sound...
Apr8-12 01:16 PM
57 3,969
Hi all, i want to ask a simple question which is not so for me. Actually while studying transverse waves, a line is...
Oct20-08 04:29 PM
2 1,882
Hey my friends please solve my problem Both longitudinal and transverse waves can propagate through a solid. A wave...
May31-09 09:19 AM
3 1,448
Hi, Can anybody explain how by giving an vertical impulse to a string you can cause a transverse wave. What is...
Mar13-13 06:20 AM
6 767
Why do some wave equations use sinθ and others cosθ? Does it make a difference when calculating properties such as...
Feb18-13 12:10 PM
3 728
Knowing that light goes on in infinity. Would it theoretically be possible to trap light between two mirrors? And have...
May7-11 06:20 PM
18 2,384
Hi all, I have a question about trapped ion. How can they achieve such stable frequencies if the power supply which...
Dec7-10 05:03 PM
4 786
Hi. There's something I don't understand.. and it might be a silly question, but I want an answer. Light is formed...
Feb17-11 09:57 PM
Andy Resnick
13 3,402
I was watching the movie K-PAX the other day and the dude from K-PAX (another planet obviously)was asked how he can...
Dec22-03 02:38 AM
6 3,150
I'm very sorry for probably posting this in the wrong place, but I'm kind of a newbie when it comes to physics. ...
Jun2-10 08:03 AM
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I was wondering if such could be possible in the future, to travel from one spacetime to another (if other spacetimes...
Mar15-11 04:31 PM
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