- #1
uam
Hi Everybody,
I am a newbie here at Physics forums. Physics is one of my favorite subjects.
I have a doubt related to the energy of light. Any help is highly appreciated.
Consider the following situation:-
A LASER beam traveling in air at a speed of 300000 km/s enters another medium with higher optical density. So its velocity becomes (say 300000 - x km/s). Now it again enters air so its speed becomes 300000 km/s.
Now the que is:-
When it entered the medium air from glass its velocity increased by x km/s. From where did it get energy to boost up its speed by the same ?
Can anyone out there pls explain and clear my doubt. Many thanks in advance !
Regards,
uam
I am a newbie here at Physics forums. Physics is one of my favorite subjects.
I have a doubt related to the energy of light. Any help is highly appreciated.
Consider the following situation:-
A LASER beam traveling in air at a speed of 300000 km/s enters another medium with higher optical density. So its velocity becomes (say 300000 - x km/s). Now it again enters air so its speed becomes 300000 km/s.
Now the que is:-
When it entered the medium air from glass its velocity increased by x km/s. From where did it get energy to boost up its speed by the same ?
Can anyone out there pls explain and clear my doubt. Many thanks in advance !
Regards,
uam