Showing posts with label light. Show all posts
Showing posts with label light. Show all posts

Wednesday, October 10, 2012

If you paint a regular white light ....black will it be a black that they use in clubs?


Question


If you paint a regular white light ....black will it be a black that they use in clubs?
just want to know if u paint a regular high voltage light black or some other dark color do it become a black that owners use in clubs


Answer


quotBlackquot lights have a special HEATPROOF, NONFLAMMABLE coating that allows only ultraviolet and some visible violet wavelengths of light to pass through Why they look purple... Black paint would allow no light to pass through, or block equal amounts of all wavelengths if the coating was thin... Wouldnt work. quotBlackquot lights run hotter than regular lights of the same wattage because of all the visable light energy reflected back by the dark violet coating and quottrappedquot in the bulb..brbrNote... There is no special filament in an incandescent black light bulb. Its all in the coating. The light from a fluorescent tube has more output in the ultraviolet range, so fluorescent tubes make better black lights.



If you increase the number of megapixels on a camera do you get a better picture?


Question


If you increase the number of megapixels on a camera do you get a better picture?
I know that you just cant increase them but is it true that the higher number of mega pixels the better the camera or is that complete and utter crap


Answer


Its true up to a point. For normal size prints, it doesnt matter if you use or megapixles the prints will look the same. But with more megapixels you can make better enlargements. For a full page print, youd want megapixels. For a small poster, youd want megapixels.brThen theres the lens. Most point amp shoots have pretty average lenses. These lenses only send about megapixels worth of information to the sensor so if you have a megapixel sensor, the rest is simply wasted. To take full advantage of a megapixel sensor, you need professional quality lenses. You can only get professional quality lenses for digital SLR cameras however. These are each. Often even .brAnd finally, in low light situations, having more megapixels can actually reduce image quality!! Every pixel corresponds to a photosite on the sensor. The more megapixels, the smaller the photosites, and the more light they need to do their job. In low light sitiations, youd want fewer but big photosites instead of tons of super tiny ones.brSo megapixels just says something about how big you can print. Image quality is determined much more by the quality of the lens.