- #1
Panthera Leo
- 109
- 0
How big should a lens be to focus enough light to reach 1000 Celcius?
I was wondering how big should a glass lens be to focus enough light to produce a temperature of about 1000 celcius at its foci?
What if the lens was made up of sth with higher refractive index, doesn't this reduce the size of lens?
A rough guess will do... I am just curious
Thanks in advance :)
I was wondering how big should a glass lens be to focus enough light to produce a temperature of about 1000 celcius at its foci?
What if the lens was made up of sth with higher refractive index, doesn't this reduce the size of lens?
A rough guess will do... I am just curious
Thanks in advance :)