What is ultraviolet light? What is polarized light? What are the three classifications of matter? When something is painted red what color is most absorbed? What is the middle color of a rainbow? What are the three things that all EMR have in common?
Scheelite fluoresces bright blue only under short wave ultraviolet light, and ruby fluoresces bright red primarily under long wave ultraviolet. Some minerals will fluoresce one color under short wave and a different color under long wave. Calcite from Terlingua, Texas, is a spectacular example of ...
What color is copernicium? What type of lens is used for Snell's law? What is cyanosis and what does it reflect? What is the refractive index of air? What is magnetic flux? How bright is earthshine? What kind of light warms the stratosphere?
What is light therapy for depression? Light therapy, also known as phototherapy, involves the use of artificial bright light or blue light to improve mood and reduce depression symptoms. The blue light used in light therapy for depression is filtered to block ultraviolet (UV) rays and not to ...
this can cause problems with determining the colors in a traffic light or how "done" cooked meat is. The test generally used to determine color blindness involves asking the person to detect a number from a circle filled with dots of varying colors. Children too young to recognize numbers may...
Color blindness commonly has a genetic cause, but it can be acquired by disease (age-relatedmacuar degeneration,diabetes) or damage to the visual system (eye or brain trauma, UV light exposure). Color blindness is usually caused by mutations on the X chromosome. Women have two X chromosomes...
says that particles of energy called photons make up light. The number of photons gives the brightness, and the energy in the photons creates its color. Both theories are correct. Light acts as both particle and wave. Simply put, light is that which enables humans and other animals to see...
The short answer is yes,LED lightsattract bugs. However, the cause of this is not the light itself, but the color temperature of the light. The ultraviolet light emitted by traditional incandescent light bulbs attracts insects. LED lights, on the other hand, emit very little UV light, but ...
s because the clouds are so thick that most of the light from the Sun is blocked before it reaches the surface. You would see a dim landscape, like you might see at twilight. The surface of the planet is littered with brownish-red volcanic rocks. The bright red color you see in the ...
LEDs were far more energy efficient than incandescent sources but initially were capable of emitting only very narrow wavelength bands, that is, single-color visible LEDs, until the invention of multi-chip LEDs and blue–violet-pumped- fluorescent LEDs to produce 'white' light. In this century,...