Physics Problem!

[TecHNooB]

A certain laser outputs pure red light (photon energy 1.8 eV) with power 750 milliwatts (0.75 watts). How many photons per second does this laser emit?

I got 2.604e18. Just need some confirmation~ (Im on my final submission )

 

[jagec]

They *REALLY* need to specify CW operation. It's not like pulsed lasers are rare or anything.

 

[iamaelephant]

The plane takes off.

 

[suicidalpigeon]

Originally posted by: iamaelephant
The plane takes off.

But it does not manipulate the air current!

 

[Ophir]

I get the same answer.

2.601E18 photons/s

 

[Juice Box]

Originally posted by: suicidalpigeon

Originally posted by: iamaelephant
The plane takes off.

But it does not manipulate the air current!

bullshit it doesn't!!

 

[silverpig]

Originally posted by: jagec
They *REALLY* need to specify CW operation. It's not like pulsed lasers are rare or anything.

Photons per second is a rate. You can have an instantaneous rate which is applicable to pulsed lasers. If the question was "How many photons does the laser put out in one second?" then you might have a case...