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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
Can you study visible light using a radio telescope explain your answer?
No, a radio telescope is designed to detect radio waves, which have much longer wavelengths than visible light. Visible light cannot be studied using a radio telescope as it operates in a different part of the electromagnetic spectrum. To study visible light, astronomers typically use optical telescopes.
What is the radiation source for visible light waves?
For ordinary purposes, there are two common light mechanisms, Black Body and Spectral Line.
Black body radiation is the kind given off by a heated material - first a dull red glow, followed by red, orange and so on as the heating continues till it reaches white hot (and beyond).
Our incandescent filament light bulb is an example of this.
Spectral lines are given off when a material is energized and an electron jumps from its usual energy level to a higher one. When the material cools enough to allow the electron to drop down to its normal state, it emits a set of spectral lines. These are quite indicative of the element and its energy level. It is this technique that allows us to determine the spectral composition of distant stars, and hence their elemental composition.
LED lights, and similar solid state devices are of this class. As also are more esoteric sources such as the plasma seen in advertising signs.
What are some future possibilities to visible light?
Future possibilities for visible light include advanced data communication technologies utilizing light waves, improved medical imaging techniques using light-based diagnostics, and enhanced energy-efficient lighting solutions such as advanced LED technology. Additionally, there is ongoing research in using visible light for novel applications like Li-Fi (light fidelity) technology for wireless communication and photodynamic therapy for cancer treatment.
Why can't the eye process electromagnetic energy?
The eye can only perceive a limited range of electromagnetic energy, known as visible light (wavelengths between 380 to 740 nm). Other ranges of electromagnetic energy, such as ultraviolet or infrared, are not within the eye's detection capabilities because the biological structures of the eye are not sensitive to them.
Is ultraviolet light transparent?
Yes, ultraviolet (UV) light is generally transparent to human eyes and is not visible to us like visible light. However, some materials such as certain plastics or specialized films can block or absorb UV light. UV light can also cause damage to our skin and eyes, so it's important to protect ourselves from excessive exposure.
Why is it important to look at the sun in the non visible wavelength?
Looking at the sun in non-visible wavelengths, such as ultraviolet or infrared, allows us to see features that are not visible in visible light. It helps scientists study different layers of the sun's atmosphere and track changes in solar activity, which can impact Earth's environment. Additionally, observing the sun in non-visible wavelengths can provide insights into solar flares, sunspots, and other phenomena that affect space weather.
All of them - alpha - beta - neutron - visible light - are examples of nuclear radiation.
Bioluminous things include glow worms, the sun, stars, the moon, fire.
Non luminous things include books, tables, contrasticly painted street signs, light wear, bright orange rooms, bright yellow rooms.
Luminous things include Light bulbs, lamps, cell phone screens, computer screens, tv screens, las vegas, light - up sreet billboards, street lamps, stoplights, car headlights, car taillights, flashlights, bicycle lights, candles, iPads, iPod nanos.
How big is the range of visible light compared with the whole EM spectrum?
It's a tiny tiny tiny portion. The only problem with giving a number is that there are
no numbers for the beginning or end of the electromagnetic spectrum. Although we
know the limits of the range of visibility, there are no physical limits to the full spectrum,
so we don't have a precise numerical way to compare them.
For round numbers, let's say that the visible range consists of wavelengths from 400 to 800 nanometers.
That corresponds to frequencies between 375,000 and 750,000 GHz.
And let's say that the spectrum extends from the bottom of the AM radio dial, up to the beginning
of gamma rays. That range of frequencies is 0.00055 GHz to 10,000,000,000 GHz.
There are two ways to compare the two ranges ... linearly and logarithmically.
Don't get scared. I'll do it gently, and I guarantee it'll be easy to understand.
Linearly:
Visible range . . . 375,000 GHz bottom to top.
Spectrum . . . 10,000,000,000.00055 GHz bottom to top . . . 26,6662/3 times as wide as visible range
Logarithmically:
Visible range . . . 375,000 to 750,000 GHz
. . . double the lowest one once to reach the highest
. . . one octave
Spectrum . . . .00055 to 10,000,000,000 GHz
. . . double the lowest one 44 times to reach the highest
. . . 44 octaves
Does Infrared radiation has a longer wavelength than visible light?
Yes, infrared radiation has a longer wavelength than visible light. Infrared radiation has wavelengths longer than those of visible light, ranging from about 0.7 micrometers (μm) to 1 millimeter (mm), while visible light ranges from about 0.4 to 0.7 micrometers (μm).
What does visible light turn in to after it hits the ground?
Visible light is either absorbed by the ground or reflected back into the atmosphere. Absorbed light is converted into heat energy, while reflected light contributes to what we see as color or brightness of the surface.
What complexes of iron are visible?
Iron complexes that are visible include iron(III) thiocyanate complex (blood red), iron(II) hexahydrate complex (light green), and iron(III) chloride hexahydrate complex (yellow-brown).
Which color in the visible spectrum causes the least amount of plant growth?
Green light causes the least amount of plant growth because plants reflect green light rather than absorb it for photosynthesis. This is why plants appear green to us, as they do not utilize green light effectively for growth.
- Violet: 400 - 420 nm
- Indigo: 420 - 440 nm
- Blue: 440 - 490 nm
- Green: 490 - 570 nm
- Yellow: 570 - 585 nm
- Orange: 585 - 620 nm
- Red: 620 - 780 nm
- To remember this, you can use Roy G Biv (from red to violet)
Or another way to remember is: ROY Goes Bowling In Vietnam
Can a onion light a light bulb?
No i don't think so. I tried to cook an onion with the wires attached to the light bulb and it didn't power up but it would if you're using the stronger liquid rather than oils. Onion can only produce very little amount of energy.
Which is the result of visible light absorbed by a metal?
When visible light is absorbed by a metal, it can lead to the promotion of electrons from the valence band to the conduction band. This can generate an excited state within the metal, potentially leading to phenomena like photoemission or a change in the metal's optical properties.
What percentage of the solar spectrum is visible light and how does it change during the day?
Sunsets have always captured the imagination with their brilliant Calvin more so when people discover that sunsets vary depending on location, or when they discover an unusual or especially colorful sunset. Sunsets in the desert tend to be very orange, whereas the sunsets in urban areas tend to be muted and may have other colors like yellows and reds. But, whether in the deserts of Arizona or the high rises of New York City, all sunsets have two things in common: light and atmosphere
Roughly 20% of visible light radiation is absorbed as it passes through the Earth's atmosphere. The remaining percentage is either reflected back into space or reaches the Earth's surface. This absorption is influenced by factors such as cloud cover, aerosols, and gases in the atmosphere.
What are some risks of visible light waves?
Your question is too vague to be answered. The word "risk" is invoked when there is some objective that is to be accomplished. Is your objective the perception of light by human eyes, the detection of distant galaxies, the successful developing of photographic film, etc?
What separates visible light into is many colors by bending each wavelength at a different angle?
A prism separates visible light into its different colors, as it is made up of a transparent material that causes light to refract at different angles depending on its wavelength or color. This phenomenon is called dispersion, with shorter wavelengths (like blue) bending more than longer wavelengths (like red), creating a spectrum of colors.
What are the colors visible in the light spectrum on earth?
red orange yellow green blue indigo violet
(Note: Those are the only real colors. Peach, mauve, fuschia, sky, maroon,
burgundy, robin's egg, teal, peacock, aqua, beige, tan, pink, copper, and
gold are all pure imaginary figments.)
What is a small segment of total electromagentic spectrum see as color?
Color is a small segment of the total electromagnetic spectrum that is visible to the human eye. It ranges from violet (shortest wavelength) to red (longest wavelength), with each color corresponding to a specific wavelength of light. The color spectrum includes all the colors of the rainbow, and each color is perceived based on the specific wavelength of light that is present.
What are the 7 kinds of light in the visible spectrum?
The seven main colors of the visible light spectrum are violet, indigo, blue, green, yellow, red, and orange. The first letter of each is sometimes used to make up the acronym VIBGYOR.
Does visible light have subdivisions?
Visible light is divided into 6 subdivisions. They are divided into the 6 colors of the
rainbow, red, orange, yellow, green, blue & violet. Indigo isn't colored a shade of the
rainbow because of the fact people cannot differentiate between blue and violet.
[Before visible light on the EM chart is infrared & afterward is ultraviolet]
[Especially if you insist on listing colors in the order of decreasing wavelength.
Otherwise, ultraviolet comes before infrared.]
What can radio waves do that visible light cannot?
Radio waves can penetrate obstacles like walls and buildings more effectively than visible light. They are also able to travel longer distances and can be easily transmitted through the Earth's atmosphere. Additionally, radio waves are used in communication technologies such as radar and broadcasting, which are not feasible with visible light.
