Sony? May be another camera maker? was selling a camera with an infrared lens.
With infrared film, someone soon discovered that infrared can get through many types of fabric.
They discontinued selling that camera.
"----Synthetic diamond scalpel blades are commercially available and well liked by surgeons. Contrary to what you might think they stay sharp much better than steel and chipping doesnt seem to be a problem. Quoted sharpness is 3 nm and achieved with plasma polishing. This is like 30 atoms wide at 1 angstrom per atom.
Outside diamond, cracked glass edges have been used for years as ultramicrotome blades for cutting sections as thin as 200angstroms for electronmicroscopy....
I cut myself on the table saw. I drove to the ER with one hand on my head. Not a problem. Much easier than texting. If the ladies can apply mascara while driving, you can drive with one hand. :-) dcarch
You can try this without cutting yourself.
Put one hand on the table, and raise the other hand above your head for a minute..
Immediately lower the hand on the table. You will see one hand is much whiter than the other.
Looks scary doesn't it? and he is not even looking at what he is doing. Look closely and you can see that his fingers show no signs of previous wounds. I think the key is that you don't really need a very sharp knife to do what he does. dcarch
Busy? Hungry? Use a food processor. In a typical meal on the average, recipes requiring lots of cutting still can be done without rushing. No one needs 10 minutes to cut an onion. two minutes may be. Why try to save 30 seconds and risk serious injuries? Learn the best way to bone a chicken (Jacques Pepin), not the fastest way to bone a chicken (Martin Yan) dcarch
A husband came home from work and found blood all over the floor and carpet. Strange foot prints. Wife and kid were missing. Front door was open, and wife's car was still on the driveway.
Panic! Called 911 to report possible kidnapping.
Long story short.
Husband is a knife nut, and every knife in the kitchen is "scary sharp". Wife was not careful making lunch, knife slipped and cut four fingers to the bone. Two neighbors helped the wife to emergency.