Dec 9, 2011 #1 C cb19 0 Joined Dec 5, 2011 Messages 65 Points 0 Today I was shining my green and red laser on the wall and noticed when looking at the dot it looked kinda fuzzy and a lot of little tiny dots put together. What is this? Thank you
Today I was shining my green and red laser on the wall and noticed when looking at the dot it looked kinda fuzzy and a lot of little tiny dots put together. What is this? Thank you
Dec 9, 2011 #2 Misanthrop 0 Joined Aug 26, 2011 Messages 647 Points 0 Please post pictures... for all we know you could have left some diffraction caps (Star caps) on or something...
Please post pictures... for all we know you could have left some diffraction caps (Star caps) on or something...
Dec 9, 2011 #3 C cb19 0 Joined Dec 5, 2011 Messages 65 Points 0 The camerA wouldent be able to pick it up.
Dec 9, 2011 #4 C cb19 0 Joined Dec 5, 2011 Messages 65 Points 0 Here's a pic I got of google I this helps. Here's the page http://upload.wikimedia.org/wikipedia/commons/b/bf/Laser_speckle.jpg
Here's a pic I got of google I this helps. Here's the page http://upload.wikimedia.org/wikipedia/commons/b/bf/Laser_speckle.jpg
Dec 9, 2011 #5 Lase 0 Joined Apr 27, 2011 Messages 757 Points 0 Your lens may be dirty, or it may be normal 'speckle'. Try cleaning your lens with 99% alcohol and a q-tip (but please wait for someone else to tell you how to do this properly as I can't remember) Lase Last edited: Dec 9, 2011
Your lens may be dirty, or it may be normal 'speckle'. Try cleaning your lens with 99% alcohol and a q-tip (but please wait for someone else to tell you how to do this properly as I can't remember) Lase
Dec 9, 2011 #6 Ablaze 0 Joined Oct 19, 2011 Messages 462 Points 0 I really don't understand your motive for asking these questions cb. You've already answered your own question: look up speckle in wikipedia.
I really don't understand your motive for asking these questions cb. You've already answered your own question: look up speckle in wikipedia.
Dec 9, 2011 #7 C cb19 0 Joined Dec 5, 2011 Messages 65 Points 0 Sorry guys I'm just starting out on lasers, I will start doing that.
Dec 10, 2011 #8 J joeyss 2 Joined Jul 23, 2008 Messages 1,112 Points 0 It's a property of coherent light that you can see when it's bright enough.
Dec 10, 2011 #10 J joeyss 2 Joined Jul 23, 2008 Messages 1,112 Points 0 It's weird when you shine a high powered green on the ceiling and see it in the entire room. Looks like millions of tiny dots on everything near you.
It's weird when you shine a high powered green on the ceiling and see it in the entire room. Looks like millions of tiny dots on everything near you.