Visible light is found within the electromagnetic spectrum between the infrared and ultraviolet regions, specifically in the wavelength range of approximately 400 to 700 nanometers. This range encompasses the colors from violet (around 400 nm) to red (around 700 nm). Visible light is the portion of the spectrum that is detectable by the human eye, allowing us to perceive colors and brightness in our environment.
The colors of the rainbow are found in the visible light portion of the electromagnetic spectrum, which ranges from approximately 380 nanometers (violet) to about 750 nanometers (red). The visible spectrum includes the colors red, orange, yellow, green, blue, indigo, and violet, often represented in that order. These colors correspond to different wavelengths of light that can be seen by the human eye.
VIsual light
Red light is a component of the visible spectrum.
To find the wavelength of blue light, simply look at an electromagnetic spectrum, specifically the visible light portion. Blue light corresponds to a wavelength of around 475 nm.
I found two EM spectrum jokes. Whether they are good, let the reader decide:An XKCD comic about the electromagnetic spectrum (please see the related link)and this (funny?) valentine:Roses reflect a light frequency at one end of the visibleelectromagnetic spectrum,Violets reflect a light frequency at the other end of the visible electromagnetic spectrum,Sugar is C12H22O11,And you release the endorphins in my brain.
The electromagnetic spectrum consists of radio waves, microwaves, infrared light, visible light, ultraviolet light, X-rays, and gamma rays. Each part has different wavelengths and frequencies, with radio waves having the longest wavelengths and lowest frequencies, while gamma rays have the shortest wavelengths and highest frequencies.
No, the optical spectrum does not represent a large portion of the electromagnetic (EM) spectrum. Electromagnetic radiation begins with what might be termed "radio waves" and goes up from there. There are a number of "radio" bands, and they take up much of the spectrum. Microwaves top the list, and lead to the infrared (IR) radiation that sits just below the visible spectrum (or optical spectrum). Above visible light we have ultraviolet (UV) radiation, and beyond that, X-rays and cosmic rays. A picture might be worth a couple of hundred words, and by using the links below you can find diagrams plus additional information.
A typical human eye will respond to wavelengths from about 390-750nm. In terms of frequency, this corresponds to a band in the vicinity of 400-790 THz. Bees and many other insects can see light in the ultraviolet, which helps them find nectar in flowers. Plant species that depend on insect pollination may owe reproductive success to their appearance in ultraviolet light, rather than how colorful they appear to humans. Birds too can see into the ultraviolet (300-400 nm), and some have sex-dependent markings on their plumage, which are only visible in the ultraviolet range. this is from the wikipedia article on visible light in the electromagnetic spectrum
Primarily Yellow but really it uses most of the visible spectrum, just some parts more than others. Green plants actually have five type of pigments that serve in photosynthesis. When the leave of the deciduous trees turn in autumn you can see the colours of many of these as they are selectively withdrawn.
While I wasn't able to find a specific name associated with the unification of the electromagnetic spectrum, I would suspect that it was James Clerk Maxwell, the man who discovered the link between electricity and magnetism, thus coining the term "electro-magnetic". The spectrum itself is just a list of the ranges of energy that a photon can be at. By studying visible light we can develop the equations that eventually lead to everything from radio waves to gamma waves.
find out the properties of x-rays and compare them with other members of electromagnetic spectrum
In a microwave oven, we find that microwave energy (from the microwave portion of the electromagnetic spectrum) are used. In a conventional oven, gas or electricity is used to create infrared heat, so we find infrared radiation (from the infrared portion of the electromagnetic spectrum, which is just below the visible light or optical portion) used there. If the oven happens to be a combination microwave and conventional, we'll find both types of electromagnetic waves generated for use inside.