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Visible Light Spectrum
Join us here to ask and answer questions on the "illuminating" topic of the visible light spectrum. This includes questions about: refraction, reflection, rainbows, prisms, mixing colored lights, and the spectrum of colors that make up white light.
1,220 Questions
What is the mass of visible light?
Light is a type of energy.Energies do not have a mass or occupy space.
gamma ray
Sure; there are solar ovens that do precisely that.One design is to simply cover an enclosed area with glass. The heat gets "trapped" inside (the glass is transparent for visible light, but not to infrared radiation); and the temperature inside gets hot enough to do baking.
Another design is to concentrate light with a parabolic mirror - concentrating it on a spot where the pot is suspended.
How much watts do visible light have?
Visible light does not have watts as a direct measurement, since watts (W) quantify power, not the light itself. However, the power output of a light source can be measured in watts, indicating how much energy it emits as visible light over time. For example, a typical incandescent bulb might produce around 800 lumens of visible light with a power consumption of about 60 watts. The actual amount of visible light (in lumens) produced per watt varies by the type of light source used.
Humans (and other primates) cannot see ultraviolet light because the pigments in the rod and cone cells in our retinas do not absorb these frequencies. Many other species (e.g. birds, insects, reptiles) actually can see ultraviolet light because they have a pigment present in a 4th type of cone cell that we don't have that does absorb these frequencies.
The ordinary type of eye that humans (and other species) have cannot see infrared because the cornea (being a moist material) is opaque to these frequencies, so they cannot enter the eye to be detected. A few types of snake called "pit vipers" can see infrared as they have an extra pair of "eyes" in their cheeks that are a type of pinhole camera, each is a small pit that because it is open and has neither a cornea nor lens infrared light can enter and focus on the back surface of the pit, which acts like a retina.
UV has a HIGHER frequency than visible light. If you get such results, either you are not measuring the correct light, or something else is wrong with the measurement.
Why color of light is called color addition?
Because the combination of some colors produce the "white" light (color).
The series of colored bands created when sunlight is separated?
This is called the (visible) spectrum; and may also be referred to as a rainbow.
What region produces visible light giving the sun it's yellow appearance?
The photosphere of the Sun (its nominal "surface") is where visible light is produced. Above it, the chromosphere is a region of bright red color, with a transition layer between it and the corona.
What color would plants be if they absorb all wavelengths of visible light?
why does plants color change to black when absorbed all wavelengths
Are those changes reported by the client that are not visible?
Yes, changes reported by a client can include modifications that are not visible, such as adjustments to underlying processes, workflows, or internal policies. These alterations may impact overall functionality or user experience without being immediately apparent. Additionally, clients may also refer to changes in expectations or requirements that influence project scope rather than tangible outputs. Communication is key to understanding these invisible changes and their implications.
Check your coolant level. The coolant overflow reservoir/bottle is located on the passenger side of the engine compartment and is clearly labeled and topped with a pressure cap. Do not remove the cap when the engine is hot, or even warm, and never with the engine running. The system is pressurized and can burn or otherwise injure you. If the bottle is empty, have your cooling system pressure tested, leak checked, flushed, and filled, and you should have no more lights going off for that. If the bottle is full, your water pump may be failing or you may have serious engine problems like a blown head gasket, cracked head, or cracked block. Check your oil also, if it's milky or frothy, you are looking at major engine work. If it's clean, let's hope for something simple like a small hose leak.
What is the angle between a ray of light and its wave front?
A light ray is always at right angles to its wave front.
What pill is light blue with the number 623 on it?
A light blue pill with the number 623 on it is a female hormone pill that contains estradiol and norethindrone. This medication is used as an oral contraceptive.
What is the relationship between an EM wave's wavelenght and whether or not it poses risk to humans?
EM radiation with shorter wavelength (higher frequency) is composed of individual
photons with higher energy. As their energy increases, so does their ability to
penetrate, to ionize, and to damage cells.
As wavelength decreases (frequency increases) anywhere past visible light, EM becomes
hazardous ... UV damages skin, X-rays penetrate, etc.
In order of increasing energies: # radio waves, passes through ozone. # microwaves, passes through ozone, but there are some resonances in "spinning" the molecule at a few tens of frequencies. # infrared, ozone absorbs some infrared... it is a molecule with more than two atoms. # visible light, very little interaction with all but blue. # ultraviolet light, UV-A passes through, UV-B and UV-C are absorbed. # X-rays, absorbed. # gamma rays, absorbed. Now it is important how much ozone is available along any given path for absorbing the radiation. Gases are very sparse, so "completely absorbed" doesn't happen. In addition, UV-C and more energetic are absorbed by all gases in our atmosphere. Ozone is unique in absorbing UV-B, and shares absorbing infrared with things like methane and water vapor.
Without any other information, the one with a shorter wavelength/higher frequency will be visible light.
How is visible light used in photography?
In much the same way as sound is used in music, food
is used in cooking, and soil is used in agriculture.
