answersLogoWhite

0

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

What is the role of frequency for the color of the visible light. i mean how does it impart the particular color to the light. like yellow colored light has got frequency of 6001014 hertz.why?

The "color" is only the sensation produced in your brain. It depends on exactly which

nerve endings on the rear surface (retina) of your eye are stimulated, and how, and

what signal they send to your brain through your optic nerve. Those receptors in the

retina of your eye respond differently to different wavelengths (frequencies) of light.

And if the wavelength is too long or too short, then they don't respond at all, and you

can't see the radiation ... like radio waves or x-rays.

How do the sizes of atoms compare to the wavelengths of visible light?

It's hard to come up with a definite number, because the total electromagnetic

spectrum has no definite edges. So, although we do know pretty close what the

limits of visible wavelength are, there are no definite limits of electromagnetic

wavelengths to compare to the visible range. However, I have handled this

question a few times here on W.A., and I can give you a few facts on the

subject.

The first, basic answer to your question is: Any way you slice it, the visible range

of wavelengths is a teeny, tiny, minuscule sliver of the total EM spectrum.

In order to come up with a number, let's set some limitsto the total spectrum.

Let's say that the lowest frequency (longest wavelength) is the bottom of the

AM radio broadcast band ... 550 KHz. And let's say that the highest frequency

(shortest waves) are the longest of what we call gamma rays ... somewhere

around 10^-19 meters in wavelength (3 giga-giga-gigahertz).

That range covers about 72 octaves (1 octave means double the frequency or wavelength, or cut them in half.)

Out of that 72 octaves, roughly 1 octave of wavelengths are visible ... something like

380 nanometers (dull violet) to 750 nanometers (deep red).

A plant whose leaves are reddish yellow is NOT absorbing light from which wavelengths of the visible light spectrum?

The plant is not absorbing light from wavelengths in the red and yellow range of the visible light spectrum. Instead, it is reflecting these wavelengths which gives it its reddish-yellow color.

X-rays travel in vacuum at a higher speed than the visible light?

Yes, X-rays travel at the speed of light in a vacuum, which is higher than the speed of visible light. This is because the speed of light in a medium is inversely proportional to the refractive index of the medium, and X-rays have a shorter wavelength than visible light, allowing them to travel at a higher speed.

Does the brightest color in the visible spectrum have the highest energy level?

Yes, the brightest color in the visible spectrum (violet) does have the highest energy level due to its shorter wavelength. Violet light has the highest frequency and carries more energy per photon compared to other colors in the visible spectrum.

How are different wavelengths of visible light transmitted by water?

When visible light enters water, shorter wavelengths (blue and violet) are absorbed and scattered more by water molecules than longer wavelengths (red and orange). This is why water appears blue as it absorbs the shorter blue wavelengths and reflects them back. Hence, longer wavelengths penetrate deeper into water, making red light the most visible at greater depths.

What is light classified as?

Light is an electromagnetic radiation. Our eyes are sensitive, the E/M radiation at the light wavelength. Hence we see light.

The E/M radiation adjacent to light are Infra-red(IR) and Ultra-violet(UV), which we do not see.

What do different colors of visible light represent?

Different colors of visible light have different wavelengths, with red light having the longest wavelength and violet light having the shortest. Each color of light corresponds to a specific range of wavelengths, with red having the longest wavelengths and violet having the shortest. Our eyes perceive these different wavelengths as different colors.

What are the six primary colors in the visible spectrum in order of decreasing wavelength?

The six primary colors in the visible spectrum, in order of decreasing wavelength, are red, orange, yellow, green, blue, and violet.

Why are ultraviolet waves and visible light waves measured in units of nanometers rather than meters or centimeters?

They are measured in terms of a smaller "unit value" to avoid constantly using the decimal or exponential values. That is, it is easier to compare wavelengths if they are expressed as integer values. A nanometer is just a convenient way of saying one-billionth of a meter.

Example : Humans can see wavelengths from about 390 to 750 nanometers ("visible light"), but birds can detect light farther into the ultraviolet range, 300 to 400 nanometers.

This is much simpler to compare than giving the values as 0.000000390 to .000000750 meters or as 3.9 x 10-7 to 7.5 x 10-7 meters.

To give a reverse analogy, you would not compare the distances between cities in terms of how many inches it was from one city to the next.

Why are more and more fire engines being painted yellow green instead of red?

If you see a blue fire truck (which would be a rare sight, at least in the US), it's because whoever owns it wanted it to be blue. Fire trucks are traditionally red, and that's a far more common color for them than blue is.

Visible light has a frequency range between 7 x 10 to the 4th power and 4 x 10 to the 4th power. Which frequency of light would have the most energy?

Those numbers are very inaccurate for visible light. But it doesn't matter. The rule is that the energy

carried by a photon of any electromagnetic radiation is proportional to its frequency.

The higher the frequency, the more energy it carries.

Is a beam a light from a flash light a geometric figure?

Yes, a beam of light from a flashlight can be thought of as a geometric figure. It can be represented as a straight line extending from the source in a particular direction. Thus, it has properties that can be associated with geometric figures, such as direction and length.

Is neon light natural light?

neon is a natural substance that is modified by man to glow. Neon is an "inert" gas which does not form any compounds. It is tenth in the periodic table. Neon means "new". It is used (at low pressure) in gas discharge lamps where an electric current through the gas causes it to glow red.

Is the human body transparent to the visible spectrum?

No, the human body is not transparent to the visible spectrum of light. Skin, muscles, and other tissues in the body absorb and scatter visible light, which is why we cannot see through the human body like we can with glass.

Why the light is important?

Light is important because it allows us to see and perceive the world around us. It plays a crucial role in regulating our sleep-wake cycle, mood, and overall well-being. Additionally, light is essential for photosynthesis in plants and provides energy for all living organisms.

All colors of visible light spectrum blended together results in what?

white light.... , The one that comes from the sun , light bulbs ... and that allows us to see.

The range of electromagnetic waves that human eyes can detect?

The range of electromagnetic waves that human eyes can detect is known as the visible spectrum, which includes wavelengths from approximately 400 to 700 nanometers. These wavelengths represent the colors of the rainbow, from violet to red. Beyond this range are ultraviolet and infrared waves, which are invisible to the human eye.

What wavelengths just a little higher than ultraviolet rays are called?

The next name of wavelengths longer than ultraviolet rays is "violet light".

What is CuNH34?

CuNH3Cl4 is the chemical formula for a complex ion containing copper, nitrogen, hydrogen, and chlorine atoms. It is not a commonly known compound and likely refers to a specific coordination compound used in a particular context or research study. The compound's properties would depend on the specific arrangement and coordination of the atoms within the complex ion.

What colors does the rainbow have?

The rainbow consists of the visible spectrum ranging from red, orange, yellow, green, blue, indigo, and violet.

===============================

Answer #2:

The rainbow has ALL of the colors. Every shade of paint that was ever

mixed, every hue of fabric ever dyed, every highlight of hair, every color

that any human eye ever saw or is able to see, they're all in the rainbow.

Many have names, but most don't.

Visible light occupies which position in which part of the electromagnetic spectrum?

Visible light occupies the middle position in the electromagnetic spectrum, between infrared and ultraviolet radiation. This part of the spectrum is the only range of electromagnetic waves that can be detected by the human eye.