Why can red light be used in a dark room?
Asked in Colors
What will be the colour of a yellow object in a dark room while red light falls on it?
Asked in Science
Which color light is most easily visible red or green?
Asked in Ducks
How can you tell if there is a duckling inside the egg?
What are all of the colours?
Asked in Disco Music
What would a red cap look like in a green disco light?
Asked in Physics
Low-frequency red light is used in dark rooms because it does not expose the film. This is because the red light has a low?
Asked in Cheat Codes
What is the answer to level 44 on the Never Ending Level Game?
Asked in Measles
Why do you need to stay in a dark room if you have measles?
Asked in Health, Conditions and Diseases, Ulcers
You have dark red spots and an open ulcer on your leg what does this mean?
Asked in Colors
Which color do you get when red light and yellow light are mixed?
Asked in Colors
What color does red look like under magenta light?
Asked in Digital Cameras, Cameras, Photography, Canon
How do you remove camera film before roll has finished?
Either expose the remaining film or, in a perfectly dark room (or a "dark room" lighted only with red light), advance the film and work the shutter as if taking photos or open the camera, remove the film and manually roll the film onto the take-up roll. If you do any of these things in a dark room or "dark room," the film will not be exposed but, unless you have photographer's equipment and skills, you will not be able to use the unexposed portion.
How would a green apple look under red light?
A purely green apple would look black under purely red light. If the apple were not purely green, it would look dark red. If the light were not purely red, the apple would look dark green. This is because red light does not reflect off purely green objects, and it is the reflected light which we see.
Asked in Health
Which colour goggles are used in dark adaptations?
Asked in Photography
What does darkroom mean?
The darkroom in photography is just what it sounds like: a dark room - a room which excludes light. Before digital, photography was accomplished using materials sensitive to light which thus had to be handled and processed in total or near total darkness so as not to spoil ("fog") the images with stray, unfocused light. Early photographic materials were not sensitive to all colors of light, so a darkroom or, sometimes, a portable dark tent (used in the field by "wet plate" photographers) could have a red or orange window in it because the early photosensitive materials were "red blind," meaning that red or orange light did not affect them. This is still true of some black and white papers, and most black and white print darkrooms will be equipped with dim "safelights" of a red or amber color. But as negative materials became more sensitive to light, and all colors of light, negative darkrooms had to become true dark rooms - totally blacked out so that no light could leak in at all. Photographers learned quickly how to work efficiently in total darkness, just as blind people can navigate very well without being able to see. As an experiment, step into your closet or bathroom and close the door without turning on any light. Wait five minutes or so. Is the room totally dark, or can you see things with the light leaking around and under the door? A photographer must seal off all those light leaks. If you can see anything at all, you are not truly in a darkroom. Incidentally, the word camera comes from the Latin camera obscura, which translates literally room (or chamber) dark (or veiled). In other words, a camera is just a "dark room."