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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
Do radio waves travel through vacuum fasetr than visible light waves?
No, radio waves and visible light waves both travel at the speed of light in a vacuum, which is approximately 299,792 kilometers per second. The speed of light is constant, regardless of the wavelength of the electromagnetic radiation.
There is a grounding issue with the system, either that or one of the components is otherwise drawing more amps than the circuit breaker is meant to handle and it is tripping.
What are colors of the visible lights spectrum from longets to shortest wavelength?
The longest wavelength that's visible to your individual eyes is that of the last color
you can see on the red end of the spectrum. The shortest wavelength that's visible
to your individual eyes is that of the last color you can see on the blue end of the
spectrum. Between those lie every color you can name, every color you have ever
seen, every color that any paint manufacturer can mix, and every color that any
fabric designer can dye or weave. There are an infinite number of them, it's not
possible to list them, and the vast majority of them don't even have names.
The light from a sparkler is the natural product of the chemical reaction between
air and the sparkler material when heated above its ignition temperature.
The pulsating stobe lights flash?
Pulsating strobe lights flash rapidly in a repeating pattern to create a flickering effect that grabs attention and creates a sense of excitement or urgency. The flashing lights may vary in speed and intensity to enhance the visual impact.
X-rays, gamma rays, radio waves, and visible light are forms of electromagnetic radiation. Gamma rays are highest in energy compared to other electromagnetic radiations. Radio waves are least in energy in the whole electromagnetic spectrum.
Where are the northern lights located?
the northen lights are located at the north and south pole
The Northern Lights can be found near the polar regions up north like Northern Canada, Northern Europe, and Northern Asia.
What type of light bulb do you use for a 2002 celica gts interior bulb?
I have a 2001 celica and it uses a 10watt type E bulb.
All power vessels must have a white Stern light. Rules differ slightly between power boats and sailing vessels, where sailing vessels can have both their port, starboard and stern lights on their mast. An all around white light denotes a vessel at anchor. If a vessel is longer then I think its 200', then they must have two all around white lights, one forward and one aft in addition to their red and green navigation lights. Vessels towing have a yellow light which signifies they are towing. They also have the back white light. The white light stands higher in the air its usually on a post or something so it could be higher in the air.
What are the frequency and wavelength ranges of visible light?
Very roughly . . . 350 to 700 nanometers
428,000 to 857,000 Gigahertz
What is the wavelength of the light produced by the lasers in CD drives?
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 wavelength
for Blu-ray Disc was reduced to 405 nm (violet color).
How does angular resolution change as observed wavelength gets longer?
For telescopes of the same size: if the wavelength gets longer, the maximum theoretical angular resolution gets larger (i.e., worse).
But to the human eye is the shortest wavelength of visible light appears as the color call?
Color vision is the ability of an organism or machine to distinguish objects based on the wavelengths (or frequencies) of the light they reflect, emit, or transmit. Colors can be measured and quantified in various ways; indeed, a human's perception of colors is a subjective process whereby the brain responds to the stimuli that are produced when incoming light reacts with the several types of Cone cells in the eye. In essence, different people see the same illuminated object or light source in different ways
What is the increasing order of frequency in electromagnetic spectrum?
I'm not sure what you intended to ask, but the frequency of electromagnetic radiation increases as the positive real numbers: from approaching the limit of zero Hz at the low end to approaching the limit of infinite Hz at the high end.
Parts of this complete spectrum of frequencies have been given names:
- Extremely Low Frequencies - 3 Hz to 30 Hz
- Super Low Frequencies - 30 Hz to 300 Hz
- Ultra Low Frequencies - 300 Hz to 3 kHz
- Very Low Frequencies - 3 kHz to 30 kHz
- Low Frequencies - 30 kHz to 300 kHz
- Medium Frequencies - 300 kHz to 3 MHz
- High Frequencies - 3 MHz to 30 MHz
- Very High Frequencies - 30 MHz to 300 MHz
- Ultra High Frequencies - 300 MHz to 3 GHz
- Super High Frequencies - 3 GHz to 30 GHz
- Extremely High Frequencies - 30 GHz to 300 GHz
- Tremendously High Frequencies - 300 GHz to 3 THz
- Infra Red - 300 GHz to 430 THz
- Visible Light - 430 THz to 790 THz
- Ultra Violet - 790 THz to 30 PHz
- X-Rays - 30 PHz to 30 EHz
- Gamma Rays - 30 EHz and up
All frequencies below 3 THz can also be called Radio Waves because they can be used for various types of Radio communication and related applications.
NATO divides Radio Waves into the following bands:
- A band - 0 Hz to 250 MHz
- B band - 250 MHz to 500 MHz
- C band - 500 MHz to 1 GHz
- D band - 1 GHz to 2 GHz
- E band - 2 GHz to 3 GHz
- F band - 3 GHz to 4 GHz
- G band - 4 GHz to 6 GHz
- H band - 6 GHz to 8 GHz
- I band - 8 GHz to 10 GHz
- J band - 10 GHz to 20 GHz
- K band - 20 GHz to 40 GHz
- L band - 40 GHz to 60 GHz
- M band - 60 GHz to 100 GHz
IEEE divides Radio Waves into the following bands:
- High Frequencies - 3 MHz to 30 MHz
- Very High Frequencies - 30 MHz to 300 MHz
- Ultra High Frequencies - 300 MHz to 1 GHz
- L band - 1 GHz to 2 GHz
- S band - 2 GHz to 4 GHz
- C band - 4 GHz to 8 GHz
- X band - 8 GHz to 12 GHz
- Ku band - 12 GHz to 18 GHz
- K band - 18 GHz to 27 GHz
- Ka band - 26.5 GHz to 40 GHz
- V band - 40 GHz to 75 GHz
- W band - 75 GHz to 110 GHz
- mm band - 110 GHz to 300 GHz
There are several other naming systems for the various parts/bands of the electromagnetic spectrum.
What will be the color reflected by a green surface when yellow light is incident on it?
No light will be reflected, since there is no incident green light to reflect.
To a human observer, the surface will appear black.
Can color of visible light spectrum be measured?
The wavelength and frequency of any given color can be measured with great
precision. But by far the quickest and easiest way to distinguish one color of
visible light from another is to look at it.
What are the tiny dots visible on photo images called?
The tiny dots that are visible on photo images are called pixels. There are generally thousands of pixels in a small area of a photograph. The larger the number of pixels in a small area, the clearer the photograph appears.
Peri-light application use after giving birth?
yes..for easy healing of the perineum.gets? the heat of the light promotes faster circulation in the blood vessels around the perineum. Good circulation in the site is giving it ample of tissue repair and nutrients need for healing.
-- The question doesn't specify the type of device where this cathode is found.
I have to assume ... since a range is specified for the assumed wavelength of
visible light, and because the question is posted to the < Visible Light > category ...
that we're dealing here with a device designed to detect visible light, such as a
photodiode.
-- The photons with the greatest energy will be those corresponding to the highest
frequency/shortest wavelength ... 390 nm .
-- 1 Joule = 6.24 x 1018 eV
-- So the cathode work function must be
hc/λ = (6.63 x 10-34) x (3 x 108) x (6.24 x 1018)/390 x 10-9 = 3.18 eV
or less, in order for the circuit to respond to visible light.
This number sounds quite reasonable for the process we're discussing here,
so I'm just going to leave it like that and quietly tip-toe out of the room.
What are 3 forms of Electromagnetic Radiation with a wavelength less than visible light?
The wavelength of electromagnetic radiation is a measure of the frequency; multiply the frequency times the wavelength, and the answer is ALWAYS the "Speed of Light", which we abbreviate as "c".
All of these are different "bands" of electromagnetic energy.
Radio is the longest wavelength and lowest frequency. "Low Frequency" is the lowest, followed by "high frequency", "very high frequency" or VHF, "ultra-high frequency" or UHF.
Beyond that are microwaves, and then heat, then "infrared", and then visible light.
Higher frequency (and shorter wavelengths) than light are "ultra-violet", then X-rays, and then "gamma rays".
