Why Is Glass Transparent?

Submitted by: ElectricEye 3 years ago in Misc
"> " type="application/x-shockwave-flash" wmode="transparent" width="425" height="350">
It might seem silly since we encounter glass every day and you are reading this through a layer of glass right now.
There are 13 comments:
Male 79
The term "infrared" covers wavelengths from thousands of nanometers (think body heat) to about 700nm, which is just below visible red. The light used to transmit data in many devices via fiber optics or free-space optics, as Nickel2 pointed out, work up in the nearly visible range around 710nm to 1100nm. So yeah, IR easily passes through glass.
0
Reply
Male 79
That`s well done. Now here`s an even more fun question: Why does glass partially reflect some small amount of photons? (check out Feynman`s little book "QED: The Strange Theory of Light and Matter" for the answer. It`s a great down-to-earth explanation of the overall behavior of light).
0
Reply
Male 38,455

oooooo.... sciencie stuff!

kewel!
0
Reply
Male 5,874
If infra red did not pass through glass, those telecoms people have made a dreadful mistake choosing the stuff for fiber-optic transmission systems.
0
Reply
Male 1,627
uh infrared cant pass through glass either and its less energetic than visible and much less energetic then ultraviolet.
0
Reply
Male 12,365
[quote]I`m pretty sure there is no glass between me and the pixels on my screen right now...[/quote]

What type of screen do you have? LCD is the most common and I think LCD monitors still use glass either side of the liquid crystal.
0
Reply
Male 299
I`m pretty sure there is no glass between me and the pixels on my screen right now...
0
Reply
Male 12,365
People who found this video interesting might like the Sixty Symbols channel on Youtube. the name stems from the fact that it was originally intended to be a series of short videos of scientists explaining a symbol used in science - what it means, why it`s interesting to them and so on - but it`s continued as a science channel. There`s loads of good stuff on it.

Sixty Symbols channel

Over 200 videos and there are related channels from the same person who films Sixty Symbols (Brady Haran).

One of the most viewed videos on Sixty Symbols is about why some materials are transparent:

Professor Moriarty`s explanation of transparency

No joke. His surname really is Moriarty and he really is a profess
0
Reply
Male 177
Yay glass.
0
Reply
Male 4,746
You`re batting a thousand on your posts lately, ElectricEye! Keep em` coming man!
0
Reply
Male 6,611
I`m a big fan of the Ted talks and ted stuff. Good video.
0
Reply
Male 7,031

Reminds me of a line from an old Donovan song, "Surely you must know a looking-glass is made from sand."
0
Reply
Male 2,729
Link: Why Is Glass Transparent? [Rate Link] - It might seem silly since we encounter glass every day and you are reading this through a layer of glass right now.
0
Reply