Zant555

Here's an example of a mirror with a 99% reflectivity capacity :

Here's an example of a mirror with a 99% reflectivity capacity : http://www.directindustry.fr/prod/korea-electro-optics-co-ltd/product-180853-1837801.html With a 97% reflectivity, isn't it : ( 100 - 97 ) = 3 ---> 3 x 3 , etc... ? If 97% of the light is conserved. ( omg, I didn't figure out how to delete my double posts... )

Ok, thanks for your answers ( I must admit I didn't look for any previous similar thread, I was so eager to get an answer : I promise I won't do that again ). I'm so disappointed, I thought mirrors wouldn't absorb much light, not that fast : I saw yesterday, mirrors with 97 % reflection capacity ( sorry for my English ? ). The text I saw yesterday was about LASERS, in fact : does it change anything ? I know it's not the same subject, but : have you ever heard about "Starlite" ? ( this is the correct spelling ). It's very interesting ( assuming it's not fake... ).

Hello, my question may sound ridiculous, but I'd REALLY like to know : if you send light into a "box" , the sides of the box being covered, inside, with mirrors : how long will light "survive" in the box ? If you drill a side of the box 20 years later, for example, will you see a beam of light ? I DO want to know the answer ( which probably depends on the quality of the mirrors ). Thanks in advance for your answers, Zant555.