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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

When visible light passes through a prism why does red light bend the least?

When visible light passes through a prism, it bends due to refraction, which occurs because light travels at different speeds in different mediums. Red light has a longer wavelength compared to other colors in the visible spectrum, such as blue or violet. As a result, it is refracted less than shorter wavelengths when passing through the prism, causing it to bend the least. This phenomenon is a key reason for the dispersion of light into a spectrum of colors.

What are the advantages and disadvantages of using visible light in communication?

One of the advantages is that it allows you to see, because the light reflects off of an object and into your eyes. One disadvantage is the amount of light pollution when stargazing.

Advantage: Plant growth.

Disadvantage: Sunburn.

Which color of the visible spectrum contain the most energy?

Each photon of blue light has more energy than a photon of any

other color, because the blue ones have the highest frequency.

What year did Isaac Newton discovered visible light?

Visible light was discovered by George Lopez, Carlos Mencia, and Gabriel Iglesias.

How is laser light different from a light in a light bulb?

Laser light is different from light in a light bulb because it is focused, coherent, and monochromatic. This means that laser light is concentrated, all the waves are in step with each other, and the light consists of a single color or wavelength. Conversely, light from a light bulb is diffuse, incoherent, and contains multiple wavelengths/colors.

If a gas stove gives a smoky flame how can you correct this?

You can correct a smoky flame on a gas stove by ensuring that the burner and surrounding area are clean and free of debris. Adjusting the air-to-fuel ratio by increasing ventilation can also help improve combustion and reduce smoke. If the issue persists, you may need to have the burner checked and serviced by a professional.

Which wavelength in the visible light spectrum gets absorbed the quickest in the ocean?

Blue light wavelengths (around 450-485 nm) are absorbed the quickest in the ocean due to the scattering and absorption effects of the water molecules and particles. This is why ocean water appears blue, as blue light penetrates less deeply than other visible light wavelengths.

Which parts of the spectrum does chlorophyll a absorb light?

It depends on what kind of pigment the plant has. The color of the plant is reflected. That means every other color is obsorbed.

How would the wavelength and frequency of a red light compare to the wavelengths and frequencies of green and violet lights?

-- Red light has the lowest frequency of those three.

-- Green light has lower frequency than violet light has.

-- The wavelength of all light is inversely proportional to its frequency.

Does visible light have more or less energy than ultraviolet light?

Well, first of all, protons don't make light. I think you mean 'photons'.

A photon of ultraviolet light carries more energy than a photon of visible light,

because it has a higher frequency / shorter wavelength.

Our eyes detect wavelengths as what?

The eyes of all seeing animals are restricted to a narrow range of the electromagnetic spectrum with wavelengths from about 400 to 700 nm (nanometers). Within this range, not all animals can distinguish between different colors; some see in shades of grey.

A healthy human eye, which does distinguish between different colors, normally detects wavelengths from 390 nm (violet) to 750 nm (red). Some animals can detect wavelengths slightly into the ultraviolet region of the spectrum, i.e. wavelengths shorter than 390 nm, that humans cannot detect.

Colors that are visible to humans run from violet through blue, cyan, green, yellow, orange, and finally red. Brown is a mix of red, yellow, and blue. White is a mix of all the colors at once. Black is not a color, but the lack of color because a black surface absorbs light without reflecting much of it back.

When the electrons release energy as visible light where do the electrons go?

Yes. When electrons go from a higher energy orbital to a lower one, they release photons (ie: light).

What gives off visible light under an ultraviolet light?

Fluorescent materials, phosphorescent materials, and objects containing fluorescent dyes or pigments can emit visible light when exposed to ultraviolet light. This phenomenon occurs as the ultraviolet light excites the molecules within these materials, causing them to re-emit visible light at a longer wavelength.

A Red light emitted by a laser has a wavelength of 588 nanometers. What is its frequency?

Wavelength lambda = 550 nanometers.

Wavelength lambda = 550*10-9 metres

c = 299792458 m/s.

Frequency f = c / lambda = 299792458 / (550*10-9) = 5.45077*1014 Hz

Which colors of visible light have the highest and lowest frequency?

Red light has the lowest frequency and violet, the highest.

The colors of visible light, in order from lowest frequency to highest:

Red, Orange Yellow, Green, Blue, Indigo, Violet.

Which colour in the visible light of a spectrum has the most energy?

The shortest wavelengths have the most energy because it has the highest frequency................... ColorFrequencyWavelengthviolet668-789 THz380-450 nmblue631-668 THz450-475 nmcyan606-630 THz476-495 nmgreen526-606 THz495-570 nmyellow508-526 THz570-590 nmorange484-508 THz590-620 nmred400-484 THz620-750 nm

so,violet is the shortest wavelength and have most energy color