0
Light is not a mechanical wave. So no need to have a material medium to pass through. Even through vacuum light can travel. Because it is an electromagnetic wave. As electrical and magnetic disturbance pass on in the form of transverse wave the distance between successive crests is defined as the wavlength of the wave. Here crest means the field intensity becoming maximum.
Wiki User
∙ 8y ago
Wiki User
∙ 7y agoBlack does not have a wavelength. Black is an ABSENCE of light. No light equals black. Nothing there to wave, so no wave length. Nothing. Nada. Zip.
Wiki User
∙ 14y agoBetween 320 nm and 400 nm.
Black is no color / light hence an absence of light has no wavelength.
Wiki User
∙ 13y agoThere are several different types of lasers that all operate on different wavelengths.
Wiki User
∙ 10y agoBlack lights emit ultraviolet light, light at a frequency just above blue light. The exact frequency range of black light is 7.5 x 10 to the 14th power to 3 x 10 to the 16th power Hz
Wiki User
∙ 14y ago6.2x10‾ ⁷m to 7.5x10‾ ⁷m roughly
Wiki User
∙ 14y agoBlack is the absence of color.
Add your answer:
Earn +20 pts
What is the frequency range of visible radiation?
The frequency range for visible light is 400-790 THz
What is the frequency range of light seen when you look at a black object?
It is either infrared (below 400THz) or ultraviolet (above 789THz).
What is the frequency for green light?
The range is 526-606 THz.
What would a red object look like shone onto a blue light?
Red and blue are at opposite ends of the visible light spectrum, red being of low frequency, and blue being of high frequency. Sunlight contains frequencies across the whole frequency range, which appears white. An object that appears white reflects all frequencies. A red object appears red because it reflects red (low frequency) light, and absorbs all other colours. Blue light contains only high frequencies. If you are in a darkened room, lit only by blue light, white objects will appear blue because they are reflecting the blue light, and no other frequency is available. But a red object absorbs high-frequency (blue) light, and since this is the only light in the room, it does not reflect any light. Objects that do not reflect any light appear black. Some objects appear black even in sunlight, because they absorb all frequencies and do not reflect any. So to answer the question, when you have a red object that is lit only by blue light, it will appear black.
What is the wavelenth of black color?
Black is not actually a colour associated with a unique wavelength of light. Black objects absorb nearly all the light at wavelengths our eyes can detect. When we look at something black we are actually seeing 'no light' (or very little compared to the surroundings).White light is the exact opposite; white objects hardly absorb any light. When we look at white objects, our eyes take in light at all wavelengths and we interpret this as the 'colour' white.Visible light wavelength range: 390 to 750 nm (there are 1,000,000 nm in 1 mm)Any light outside this range cannot be seen by humans and could be called 'black'
What is the frequency range of visible radiation?
The frequency range for visible light is 400-790 THz
What is the frequency range of light seen when you look at a black object?
It is either infrared (below 400THz) or ultraviolet (above 789THz).
What do the visible colars of light represent?
The frequency range of visible light.
Frequency range of telephonic signal?
There is a bit of an argument on the exact baseband pass frequency for telephone audio, but generally it is in the range of 300 hz to 3000 hz.
What is the frequency for green light?
The range is 526-606 THz.
What is the light you can detect with your eyes?
Visible light - electromagnetic waves in the frequency range 430 to 770 teraHz.
Which light has Frequency within the visible light spectrum?
Wavelengths in the range of 0.4 - 0.7 microns are visible.
What is the frequency range of the various breeds of dog bark?
the speed of light
How do colors relate to science?
Color is the frequency of visible light. The visible light wave range in frequency from 430 trillion hertz, which is red light, to 750 trillion hertz, or violet light.?æ
How is frequency related to light?
The frequency of electromagnetic radiation determines whether it is gamma rays, x-rays, radio waves, ultraviolet light, or visible light. Each color of light has its own range of frequencies.
What is the property of certain substances to absorb radiation of one frequency and to reemit radiation of lower frequency?
This one is fluorescence. The example of high-lighters is that they absorb UV light (so-called "black light") and re-emit at the visual range, yellow, pink, orange. UV is a higher frequency than visible light. Just so you know, there is no process where something absorbs low-frequency and re-emits at a high frequency. The same idea, light being absorbed and re-emitted at a different frequency - has two main types. If it happens immediately, it is "fluorescent" (think highlighters in a black light) If there is a delay, it is "phosphorescence." Both effects and the delay in the second, are the result of quantum mechanics.
What is the difference between a black light bulb and white light bulb?
Light is available in a variety of wavelengths depending on the emitter. Black light is in the ultraviolet range. White light is a mixture of frequencies in the visible range.
