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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
How is visible light used or found in our everyday lives?
Visible light plays a crucial role in our everyday lives, as it enables us to see and perceive our surroundings. It is used in various applications, such as lighting our homes and workplaces, powering solar panels, and facilitating communication through technologies like fiber optics. Additionally, visible light is integral to photography, art, and displays on electronic devices, enhancing both functionality and aesthetics. Overall, it is essential for both practical uses and enriching our experiences.
Where in your house do you find visible light waves?
Visible light waves can be found throughout the house, primarily coming from sources like windows, lamps, and light bulbs. Natural light enters through windows during the day, illuminating rooms, while artificial light from lamps and overhead fixtures provides visibility at night. Additionally, screens from televisions, computers, and smartphones also emit visible light waves, contributing to the overall illumination in the home.
Where in the spectrum is the atmosphere opaque?
The atmosphere is mostly opaque in the ultraviolet (UV) and infrared (IR) regions of the electromagnetic spectrum. Specifically, UV radiation is absorbed by ozone in the stratosphere, while IR radiation is absorbed by water vapor, carbon dioxide, and other greenhouse gases. This opacity limits the transmission of these wavelengths, affecting how energy from the sun reaches the Earth's surface and how heat is radiated back into space.
What are the colors of the visible spectrum in order of inceasing frequency?
The colors of the visible spectrum, in order of increasing frequency, are red, orange, yellow, green, blue, indigo, and violet. Red has the lowest frequency, while violet has the highest. This spectrum is often remembered by the acronym ROYGBIV. Each color corresponds to a specific wavelength of light, with red having the longest and violet the shortest.
What are the seven colors seen in the visible spectrum write them in order?
The seven colors seen in the visible spectrum, in order, are red, orange, yellow, green, blue, indigo, and violet. These colors can be remembered using the acronym ROYGBIV. They represent the range of wavelengths of light that are visible to the human eye.
Is this true or false that visible light with the shortest wavelengths are red and orange light?
False. Visible light with the shortest wavelengths corresponds to violet and blue light, not red and orange. The visible spectrum ranges from approximately 380 nanometers (violet) to about 750 nanometers (red), with red light having the longest wavelengths.
What is made up of colors of the visible spectrum?
The visible spectrum is made up of colors that can be seen by the human eye, which include red, orange, yellow, green, blue, indigo, and violet. These colors correspond to different wavelengths of light, with red having the longest wavelength and violet the shortest. When combined, these colors can produce white light, as seen in phenomena like rainbows or when light passes through a prism.
Would you following has wavelengths longer than the wavelengths of visible light?
Yes, wavelengths longer than visible light include infrared radiation, microwave radiation, and radio waves. Visible light has wavelengths ranging from approximately 400 to 700 nanometers, while infrared rays can range from about 700 nanometers to 1 millimeter, and microwaves can range from 1 millimeter to 1 meter. Radio waves have even longer wavelengths, exceeding 1 meter.
Why do photon of red light has a less penetrative ability than a gamma ray photon?
Well, honey, red light photons are like the friendly neighbor who stops by for a chat, while gamma ray photons are the aggressive door-to-door salesperson who won't take no for an answer. Red light photons have lower energy and longer wavelengths, making them less penetrative compared to the high-energy, short-wavelength gamma ray photons. It's like comparing a gentle breeze to a hurricane - one just doesn't pack the same punch as the other.
Why a photon of red light has less penetrative ability than a gamma ray photon?
A photon of red light has lower energy and shorter wavelength compared to a gamma ray photon. This means that red light has less penetrating power because it interacts less with matter compared to gamma rays, which have higher energy and can penetrate through materials more effectively.
If you heat a piece of wire until it glow's what type of spectrum does it produce?
Well I know if you heat a rock until it glows, its spectrum will be thermal radaition spectrum
Color is a characteristic that depends on which parts of the visible light spectrum are reflected from a mineral. Different minerals absorb and reflect certain wavelengths of light, resulting in the colors we observe.
What is the medium of a mirror?
The definition of "Medium" is the material that something is made of. So, a mirror can be made of any material that can be polished enough to be reflective. For example, Metal, Plastic, Glass, even Water can have mirror properties.
You may wish to restate your question?
How does sound and visible light compare to origin?
Sound is a mechanical wave that requires a medium (like air, water, or solids) to travel through, while visible light is an electromagnetic wave that can travel through a vacuum. Sound waves travel slower than light waves and are typically experienced as pressure variations, while light waves travel much faster and are perceived as color. Both sound and light waves are forms of energy that propagate in waves.
Which type of spectrum is produced when light from the sun passes through a prism?
It is the spectrum of visible light, which has the colors of the rainbow.
Does infred waves have the same wavelength as visible light waves?
No, infrared waves have longer wavelengths than visible light waves. Infrared waves have wavelengths ranging from about 700 nanometers to 1 millimeter, while visible light waves have wavelengths ranging from about 380 to 750 nanometers.
What uses a shorter wavelength light than a CD?
A Blu-ray disc uses a shorter wavelength light than a CD. Blu-ray technology uses a blue laser with a wavelength of 405 nanometers, compared to the red laser used in CDs with a wavelength of 780 nanometers. This shorter wavelength allows for greater data storage capacity on a Blu-ray disc.
Are microwave ovens light rays longer or shorter than light rays you can see?
Microwave ovens use longer light rays than the visible light rays we can see. Microwave radiation has a longer wavelength, which allows it to penetrate and heat food without being visible to the human eye.
Where is visible light place in electromagnetic spectrum?
That's hard to discuss, because the electromagnetic spectrum has no ends.
If you name a frequency, then no matter how low it is, I can name a lower one,
and no matter how high it is, I can name a higher one. So, it's easy to describe
the size of the visible portion, but it's hard to describe the size of the full EM spectrum.
So let's just talk about the size of the part of the E&M spectrum that humans
use for radio communication, and ignore all the rest of it ... the infra-red, x-rays,
ultraviolet, gamma rays, all that other stuff. Only the part that we know how to
generate and modulate with very precise frequency control, and transmit and
receive over significant distances.
That's the portion of the E&M spectrum with frequencies from about 60 KHz
to about 100 GHz (wavelengths from about 3 millimeters to 5 kilometers).
'Linearly', that's a range of about 100 GHz bottom-to-top. But a much better
way to talk about parts of the E&M spectrum is logarithmically ... how many
'octaves' (doublings) or 'decades' (multiplied by 10) they cover.
Measured that way, our use of radio spans about 21 octaves, or about 6.2 decades.
Now we're ready to go look up the frequency/wavelength range of visible light.
A typical human eye will respond to wavelengths from about 390 to 750 nm
(3.9 to 7.5 x 10-4 millimeters). In terms of frequency, this corresponds to a band
in the vicinity of 400-770 THz (400,000 to 770,000 GHz).
That makes the visible range about 0.95 octave, or about 0.28 decade ... only
about 41/2% as wide as the range of wavelengths we use for radio communication!
Now, for fun, we'll try and include those other E&M phenomena that we've been ignoring.
We'll still have to decide where the ends of the spectrum are, because it really doesn't
have any.
For the bottom frequency, let's take 60 Hz. That's the small amount of RF that
radiates from power lines, which we always ignore. The wavelength is about
5,000 kilometers. (!)
Let's take gamma radiation for the top end ... the stuff generated in nuclear
decay, supernovas, black holes, that sort of thing. Dangerous stuff because
of its high energy. We're still here only because Earth's atmosphere absorbs
most of the gamma radiation from space, and not much of it ever reaches the
ground. Astronauts have to be shielded from it.
Gamma rays typically have frequencies above 10 exahertz (or >1019 Hz), and
wavelength less than 10 picometers (less than the diameter of an atom.)
So now, our 'expanded' range of electromagnetic spectrum covers 57.2 octaves,
or 17.2 decades, and the range of visible light is about 1.6% as wide as that.
Bottom line . . . we don't actually "see" a whole lot of the E&M spectrum, but
we know how to build instruments that detect the parts we can't see.
What color would banana be under a yellow light?
Banana would appear as a darker shade of yellow under a yellow light due to the way light interacts with its surface texture. The yellow light would enhance the yellow tones of the banana, making it appear richer and more vibrant.
What is the fastest visible light wavelength?
If you're talking about how long it takes light to get from here to there ...
all wavelengths of light, as well as all wavelengths of every other example
of electromagnetic radiation, all travel at the same speed.
What are the 6 colors of visible light?
Actually, there are 7 and these are the colors of the rainbow: red, orange, yellow, green, blue, indigo and violet.
Do astronomers use only visible electromagnetic radiation to study space?
No. Modern-day astronomers do not use only visible electromagnetic radiation to
study space. They use additional bands of the electromagnetic spectrum to study
space, including radio, microwave, infra-red, ultraviolet, X-ray, and gamma ray.
Darn! That's just about everything.
