rbiemer
Unabashed Amateur
Ice--either big cubes/blocks or a glass of crushed-- is fun to shine these through!
Rob
Rob
ampguy said:
ampguy
Veteran
yeah, we did this
yeah, we did this
but our laser was so weak, it diffused within a cm or so within the cube, we could get about one reflection at about a 30-45 deg angle, and then it was diffused.
yeah, we did this
but our laser was so weak, it diffused within a cm or so within the cube, we could get about one reflection at about a 30-45 deg angle, and then it was diffused.
rbiemer said:
mjflory
Accumulator
Chris101
summicronia
Looks like laser interference to me. I did a lot of that kind of photography in the 70s.
ampguy
Veteran
interesting!
interesting!
the kids and I were wondering if some kind of automated laser moving device existed that would automatically exercise the kitty, who could use some exercise (see attachment!)
But that reference mentions invisible light, where all I've seen had color. We think that cats can't see red, so maybe the cats are seeing it as bright white or monichrome?
The toy also has 3 or 4 other shapes besides a dot, like a mouse template, but they're so weak, that the kitty prefers just the plain dot selection.
interesting!
the kids and I were wondering if some kind of automated laser moving device existed that would automatically exercise the kitty, who could use some exercise (see attachment!)
But that reference mentions invisible light, where all I've seen had color. We think that cats can't see red, so maybe the cats are seeing it as bright white or monichrome?
The toy also has 3 or 4 other shapes besides a dot, like a mouse template, but they're so weak, that the kitty prefers just the plain dot selection.
mjflory said:You'd better watch out for patent infringement (see patent here)...
Attachments
MikeL
Go Fish
mjflory
Accumulator
You've got to admit, you didn't take that picture from the most flattering perspective!
I noticed the bit about "invisible light." I just chalked it up to careless writing, perhaps meaning that the beam is invisible until it strikes something.
I noticed the bit about "invisible light." I just chalked it up to careless writing, perhaps meaning that the beam is invisible until it strikes something.
ampguy said:
Peter_Jones
Well-known
My theory is cats whose eyes reflect green see in monochrome, cats whose eyes reflect red see colour. (or are possessed)
MikeL
Go Fish
I feel for ya Ted, my wife had a thirty pounder despite severe diet restrictions. That cat kept every calorie that entered it's mouth.....
Tuolumne
Veteran
I'm sorry to say that it is true, but someone has patented stimulating the hunting response in cats/dogs using LASER pointers. So I used my watch bezel to reflect sunlight instead.