The velocity of the light waves must be given before the frequency can be find.
Light waves pertain to the frequency of light. All light is known as electromagnetic radiation and travels in the form of a wave (although it does have particle characteristic) meaning that these waves have different frequencies. A frequency tells us how often the waves goes up and down and how powerful they are. Light can also be measured by it's wave length, the distance it take for the light to go up and back down again (vice versa). A certain wavelength of light will be a different color, for example if light (Electromagnetic Radiation) has a wavelength of 650 nm (nanometers) then it will appear as the color red. Humans can only perceive light that has a wavelength in between 350 nm and 750 nm, a very small portion of all electromagnetic radiation. Here is a list of colors pertaining to their wavelength: Violet: 400 nm Indigo: 445 nm Blue: 475 nm Green: 510 nm Yellow: 570 nm Orange: 590 nm Red: 650 nm White: White is a mixture of all colors of visible light. Black: Black is an absence of light, meaning that there is no light.
The naming of the colours in the visible spectrum were arbitrary, However there was a common agreement that red (or equivalent terms in other languages) was the colour associate with light having a wavelength of about 650 nm. This wavelength is longer than the other visible light colours and is part of the overall electromagnetic spectrum ranging from wavelengths of a millionth of a nanometer (gamma rays) to radio wave of a 100 km or so.In short the name came first, then we figured out what the wavelength was.
A ruby laser is a red laser with a wavelength between 694 nm and 628 nm. 1 nanometer = 1×10−9 meter.
The color red is the wavelength of the electromagnetic spectrum that is about 650 nanometers (within the range of what is commonly called "visible light"). This represents a particular wavelength (inversely, a particular frequency) that photons of light exist at. When a photon of this kind exists, it is generally because an atom of a substance has emitted a photon of this wavelength/frequency (a "red" photon). This can happen when a substance receives broad-spectrum (white) light, and absorbs all but the red part of the visible spectrum. After the red photon has been emitted, it is absorbed by a molecular/enzyme complex called "rhodopsin" in the retina of the eye, where it, then, produces a particular energy "signal" for the optic nerve. This signal travels back to the visual cortex in the occipital lobe of the brain (in the back), and it is "decoded" as "red".
The visible red light has a wavelength of about 650 nm. At sunrise and sunset, red or orange colors are present because the wavelengths associated with these colors are less efficiently scattered by the atmosphere than the shorter wavelength colors (e.g., blue and purple). A large amount of blue and violet light has been removed as a result of scattering and the longwave colors, such as red and orange, are more readily seen.
It affects the color of the light. If you change the wavelength of visible light, you change the light's color. For instance. Red is a wavelength of approximately 650 nanometers. Orange, about 590. Yellow, 570. Green- 510, Blue, 475 nanometers. Indigo is 445 and Violet is about 400. You can see more here: http://eosweb.larc.nasa.gov/EDDOCS/Wavelengths_for_Colors.html#red
Light waves pertain to the frequency of light. All light is known as electromagnetic radiation and travels in the form of a wave (although it does have particle characteristic) meaning that these waves have different frequencies. A frequency tells us how often the waves goes up and down and how powerful they are. Light can also be measured by it's wave length, the distance it take for the light to go up and back down again (vice versa). A certain wavelength of light will be a different color, for example if light (Electromagnetic Radiation) has a wavelength of 650 nm (nanometers) then it will appear as the color red. Humans can only perceive light that has a wavelength in between 350 nm and 750 nm, a very small portion of all electromagnetic radiation. Here is a list of colors pertaining to their wavelength: Violet: 400 nm Indigo: 445 nm Blue: 475 nm Green: 510 nm Yellow: 570 nm Orange: 590 nm Red: 650 nm White: White is a mixture of all colors of visible light. Black: Black is an absence of light, meaning that there is no light.
650 nm= .00000065 m 2m - .00000065m= the water wave is ~1.99999935 meters larger than the red light wave
The naming of the colours in the visible spectrum were arbitrary, However there was a common agreement that red (or equivalent terms in other languages) was the colour associate with light having a wavelength of about 650 nm. This wavelength is longer than the other visible light colours and is part of the overall electromagnetic spectrum ranging from wavelengths of a millionth of a nanometer (gamma rays) to radio wave of a 100 km or so.In short the name came first, then we figured out what the wavelength was.
Not even close. Microwaves are much longer, with a lower frequency, than light is.The shortest 'microwave' is in the neighborhood of 1 millimeter long (300 GHz).That's about 1,540 times as long as the longest visible wave (red, 650 nm)).
"nanometer" or billionths of a meter. 650 nanometers is the wavelength of the light produced by the diode.
A ruby laser is a red laser with a wavelength between 694 nm and 628 nm. 1 nanometer = 1×10−9 meter.
Red - its 650 nanometer wavelength puts it squarely in the middle of the visible light's red spectrum.
Originally, CD lasers with a wavelength of 780 nm were used, in the infrared.For DVDs, the wavelength was reduced to 650 nm (red color), and the wavelengthfor Blu-ray Disc was reduced to 405 nm (violet color).
We start with two formulas; E = hf and f = c/λwhere:E = Energy (eV)h = Planck's Constant (6.626x10-34 (J-s))f = frequency (Hz) of orange light at 650 nmc = speed of light (3x108 m/s)λ = wavelength of orange light (nm)First, f = c/λ can be used to replace f in E=hf making the revised formula E = hc/λ;Solve for E;E = (6.626x10-34 * 3x108 ) / 650x10-9 = 3.0582x10-19 eV
The color red is the wavelength of the electromagnetic spectrum that is about 650 nanometers (within the range of what is commonly called "visible light"). This represents a particular wavelength (inversely, a particular frequency) that photons of light exist at. When a photon of this kind exists, it is generally because an atom of a substance has emitted a photon of this wavelength/frequency (a "red" photon). This can happen when a substance receives broad-spectrum (white) light, and absorbs all but the red part of the visible spectrum. After the red photon has been emitted, it is absorbed by a molecular/enzyme complex called "rhodopsin" in the retina of the eye, where it, then, produces a particular energy "signal" for the optic nerve. This signal travels back to the visual cortex in the occipital lobe of the brain (in the back), and it is "decoded" as "red".
That's actually fairly meaningless, 1nm is one nanometre, there are one billion (1 000 000 000) nanometres in one metre. There are 1 609 metres in one mile. The number of nanometres in one mile is to big to be really meaningful.