|
|
| Тема |
 Re: преминаване на ултравиолетови лъчи [re: hidrazin4o] |
|
| Автор |
Sargonlll () |
|
| Публикувано | 08.08.13 08:36 |
|
|
|
Не е точно така:
PMMA transmits up to 92% of visible light (3 mm thickness), and gives a reflection of about 4% from each of its surfaces on account of its refractive index (1.4914 at 587.6 nm).[3] It filters ultraviolet (UV) light at wavelengths below about 300 nm (similar to ordinary window glass). Some manufacturers[16] add coatings or additives to PMMA to improve absorption in the 300–400 nm range. PMMA passes infrared light of up to 2800 nm and blocks IR of longer wavelengths up to 25000 nm. Colored PMMA varieties allow specific IR wavelengths to pass while blocking visible light (for remote control or heat sensor applications, for example).
Мен ме интересува диапазона UVC (280-100) nm.
| |
| |
| 
|
|
