Reflect laser lights or turn them off?
968147
You' need to go to a site about defeating security systems. Defeating security systems may be illegal and dangerous.
1140780
Use the night mode on your camera. Or rent a light kit.
1067308
Laser is supposedly better, but my optical mouse works GREAT, so I wouldn't need one. Optical just uses a red light, laser uses ... a laser for better precision.
1140404
The effect you speak of, really doesn't even require perfect reflection or a one-way mirror.  In our day to day experience, if you turn of the light in a closed room - it gets dark...immediately.\n\nHowever, on very short time scales, a high powered light source beamed into a cavity can result in a an internal radiation field more intense than the light source itself.\n\nIn some inertial confinement fusion experiments, scientists fire lasers into such cavities ('holraums') to achieve radiation intensities high enough to cause small capsules to implode ablatively.
383099
If it's LCD. \nDo NOT leave it in direct sunlight for very long.
234011
Real mirrors aren't 100% effective, so each time the light bounced off a mirror, some would be absorbed.  Plus, there's also you with your flashlight in the room, and most of the light that hits you would be absorbed.  So, the answer is that the light would be absorbed and converted to heat, just like it would in a room without mirrors.
150598
It depends on how long they are off before turning them back on.  I've read that if the light is going to be off for more than 30 min., then turn it off.  If it needs to be back on within 30 min., then just leave it on.
255949
Turn WindowBlinds  and other object desktop items off.
961324
work during day light
183505
- Turn off lights when you leave the room.\n- Change light bulbs to compact fluorescent.\n- Power off computers, monitors, TV, stereo, other electronics when you are not using them.\n- Turn down your thermostat a few degrees.\n- If you think that your electricity use is due mostly to heating, then look for ways to better insulate your house. Replace/install weatherstripping around doors. Stop up drafty windows. Install better insulation if you own your home.
171185
use black light,u will find it in any good store
181250
The light will be on/off
983924
Black lights don't work.  Think of how many halloween parties you were at that had one of those and there weren't splotches on the couch and chairs (or heaven forbid on the sheet the guy used to look like a ghost).\n\nYou need a 366nm UV lamp, not a 254 nm lamp.\n\n\nWhat about washing or disinfecting the furniture when you get it instead of buying something?  It would also be weird going into a store, asking them to turn the lights out and then using the lamp.  Plus you have to explain why you are looking for splooge.
1054046
Q refers to the quality factor of a laser. So to Q switch a laser you are changing the laser cavity itself. This can either be done by adjusting the mirrors in and out of alignment (not a very good idea) or by changing the reflectivity of one mirror using a electrooptic device.\nDue to this Q switch lasers are able to build up large amounts of power and release them in a small burst of energy.
720444
you have to turn it off
417980
There are no materials that are 100% reflective.  Silver and aluminum are in the 90% range, but nothing is 100%.\n\nIf you had a room covered in 95% reflective materials, it would still dim almost instantly after turning off the light.  Light travels about 186,000 miles in one second.  If your room were 10'x10', a light beam about be hitting the walls around 10,000,000 times in the first second, losing 5% of its energy each time.  In the first 1/100,000th of a second, its energy would be reduced to about 0.6% of its orignal value, much faster anyone would notice.
1016805
Who added the laser part?  There are no stinkin lasers.\nWe don't need no stinkin lasers.  It's not a laser. \nIts just a big blue light.