Re: [Phys-l] Light mystery

[Tony <physixdude@comcast.net>]

Same results in a completely dark room.
-Tony


On 7/16/10 2:05 PM, "Wendy Kristine Adams" <Wendy.Adams@Colorado.EDU> wrote:

> Are the lights on in the room when you do this?  If so, have you tried it in
> a completely dark room?
>
> -----Original Message-----
> From: phys-l-bounces@carnot.physics.buffalo.edu
> [mailto:phys-l-bounces@carnot.physics.buffalo.edu] On Behalf Of Tony
> Sent: Friday, July 16, 2010 12:03 PM
> To: Address Phys-L Send To
> Subject: [Phys-l] Light mystery
>
> When I take a green laser pointer and aim it at a white paper I get a green
> dot and green diffuse reflection on the white wall. When I take the same
> green laser pointer and point it at fluorescent orange and/or fluorescent
> pink paper, I get a yellow spot on the paper and I still get green diffuse
> reflection. I'm guessing that I'm getting some excitation similar to when it
> is lit by UV light. But I don't see why I'm getting the green reflection.
> Can someone verify if my excitation idea is on track and explain the why I
> get the green reflection? It is as simple as the source is green and some
> light is absorbed while non-absorbed photons are reflected?
> Thanks in advance.
> -Tony