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
Why are atoms invisible to visible light?
Atoms are typically smaller in size than the wavelength of visible light, which makes them difficult to detect using visible light. Additionally, atoms do not absorb or reflect visible light in a way that allows them to be seen by the human eye. Special techniques such as electron microscopes are often used to visualize atoms.
Very low temperature molecular clouds emit most of their light in the far-infrared and submillimeter parts of the electromagnetic spectrum. This is due to the low temperatures causing the atoms and molecules in the clouds to emit radiation at longer wavelengths.
This observation indicates that the Sun is rotating about its axis, causing a Doppler shift in the light's frequency. The difference in frequency between points A and B is due to the Doppler effect, showing that different parts of the Sun are rotating at varying speeds.
What is the velocity of violet light?
Have you ever heard of "The Speed of Light" ?
Have you ever wondered why it's just a number, and it doesn't say anything
about the color of the light ?
The speed of all colors of light is the same, as long as they're all moving through
the same substance. It's the number called the "Speed of Light", which you should
be able to look up quite easily.
What are Infrared rays used for?
Infrared light has a number of applications. In fact, some animals can sense infrared light, which make it easier to catch prey or to see under poor lighting. Infrared has a number of heating applications, such as being used to cure certain adhesives. There are experiments being done which involve using near IR light to promote healing.
Infrared light is what common television remotes use. The signals are modulated in how the IR light is pulsed, so that is how the different buttons on the remote are distinguished.
Some other applications include meteorology, communications, climatology, astronomy, art conservation, imaging, and missile guidance, among others.
How do you block visible light?
Visible light can be blocked using materials that absorb or reflect the light, such as tinted glass, opaque materials like metal or wood, or specialized filters like polarizing filters or blackout curtains. These materials prevent the light from passing through, thus blocking it from reaching the desired area.
What color would a plant be if it absorbed all wavelengths of visible light?
To do this, it would have to be black, which is the lack of color.
The primary colors of visible light are red blue and what?
The third primary colour of light besides red and blue is green. This is why colour televisions contain red, blue and green pixels.
Are the frequencies of ultraviolet waves slightly higher than visible light?
Ultraviolet light extends for quite a ways up the electromagnetic spectrum after visible violet ends. Its frequencies are higher. Wavelengths from 400nm to 50nm covering 4 groups of UV.
Why can't a protein be seen with visible light?
Proteins are too small to be visible with the naked eye or even with a regular light microscope because their sizes range from a few nanometers to a few micrometers. The wavelength of visible light is much larger than the size of a protein, making it impossible for visible light to resolve individual proteins. Specialized techniques, such as fluorescence microscopy or electron microscopy, are needed to visualize proteins.
Why can an x ray travel through your body but visible light can not?
The simple answer is 'they do.'
If you were to hold a piece of paper up to direct sunlight, you would be able to the sunlight coming through the paper. The paper is opaque but not completely so, some light does get through. If you were to put a piece of glass on top of this piece of paper you would see it too. Even though glass is transparent to visible light it still has refractive and reflective properties that effect the light that falls on it.
The same is true for x-rays. Flesh and bone is opaque to x-rays but not completely so. Shining x-rays on a limb will show something of the things in it.
What is the amplitude of the visible light spectrum?
It is not meaningful to talk about "amplitude of the visible light spectrum". One might think that more intense light would mean greater amplitude of the light wave, but it just means more photons.
"Visible light" is made up of photons. A single photon has a certain quantifiable energy, and that energy is discussed in terms of frequency or wavelength. A photon with low frequency (towards the red end of the visible light spectrum, for instance) is less energetic than a photon with high frequency (towards the blue end and beyond).
For all intents and purposes, the amplitude of a photon wave-packet could be said to be of "unit amplitude", the amplitude of light.
Why are x rays so much more powerfull than visible light rays?
X-rays have higher energy and shorter wavelengths than visible light rays, allowing them to penetrate deeper into materials and tissues. This property makes X-rays useful for imaging bones and other dense structures in the body. Additionally, the production of X-rays involves high-voltage electricity and specialized equipment, contributing to their higher power compared to visible light rays.
The wavelength and frequency ranges for visible light?
A typical human eye will respond to wavelengths from about 390 to 750 nm. In terms of frequency, this corresponds to a band in the vicinity of 400-790 THz
At which of these Kelvin temperatures would a blackbody radiate mostly at visible wavelengths?
A blackbody would radiate mostly at visible wavelengths at around 5800 K, corresponding to the temperature of the Sun's surface.
What range of cosmic rays through visible light are included in the?
Cosmic rays are high-energy particles originating outside Earth's atmosphere, including protons, electrons, and atomic nuclei. Visible light encompasses the wavelength range of electromagnetic radiation that is visible to the human eye, typically between 400-700 nanometers. Cosmic rays far exceed the energy levels of visible light and are not part of this electromagnetic spectrum.
What is the wavelength of visible lights?
The longest wavelengths visible to the average human being are in the range of ~700 nanometers which appears to be red to the human eye.
However, I am capable of perceiving the red light that my 2 Logitech cordless laser mice emit at 848 nanometers. I hope I am not damaging my eyesight, but I don't believe the emission spectrum for such a laser would be very wide, so I would bet that 800-820 nm is still in the visible range, at least for younger people. I am 22 years old.
the longest wavelengths of visible are red colored
Continuous spectrum of the x-ray?
A continuous spectrum of X-rays is produced when a high-energy electron bombards a target material, causing electrons in the target to be knocked into higher energy levels and then drop back down, emitting X-ray photons across a range of energies. This results in a continuous range of X-ray wavelengths being emitted, rather than discrete lines.
It really depends on the type of glass. "Glass" is a more or less generic name for different substances that look transparent for us. The normal glass is mainly transparent for visible light; it will absorb both most ultraviolet light, and most infrared light.
What could visible light be like in the future?
In the future, advances in technology may allow us to manipulate visible light in more creative ways, such as creating custom light patterns for different purposes or enhancing the efficiency of light-based communication systems. There may also be innovations in materials that can interact with light in new and exciting ways, leading to novel applications in areas like medicine, energy, and computing.
Is Marlboro red and Marlboro lights the same?
Marlboro Red and Marlboro Lights are not the same. Marlboro Red is a full-flavored cigarette with a higher tar and nicotine content, while Marlboro Lights are a lighter version with decreased tar and nicotine levels.
Why dont you observe a compton effect with visible light?
Photons propagating at frequencies in the visible light spectrum can knock out electrons from atoms, known as the photoelectric effect, if their energy is greater than the photoelectric work function for that atom. However, at the energies associated with the visible light frequencies, these new photoelectrons will absorb any excess energy of the initial photons and convert it to kinetic energy, meaning that the initial photons vanish. Obviously, if the photons are gone, they can't scatter. Increasing the intensity (brightening) of the photons will cause more electrons to be emitted, but it will not increase their energy since photon energy is a function of its frequency, not quantity.
Photons that retain energy after interacting with an electron via the photoelectric effect are said to undergo Compton scattering. Now, despite what everyone says, if a photon has any amount of energy greater than the applicable photoelectric work function, it can theoretically undergo Compton scattering. Yes, I'm implying that visible light can Compton scatter. However, the probability of Compton scattering at these energies is very low, not to mention these scattered photons would most likely loose all of their energy from all of the other various available atomic interactions before they could even escape the sample, which is a necessary component to measurement (something has to exist in order to be measured). Therefore, the effects of Compton scattering are negligible at visible light energies. In fact, they don't really start becoming noticeable until around energies of 100keV, which is around 105 times greater than the energies associated with visible light. These kinds of energies are associated with x-rays.
The remaining energy is radiated as heat. Making the filament hotter should increase the percentage of visible light. I believe some lamps (like halogen lamps) do this. But the real solution is to use other technologies - like fluorescent lights, or LEDs.
The remaining energy is radiated as heat. Making the filament hotter should increase the percentage of visible light. I believe some lamps (like halogen lamps) do this. But the real solution is to use other technologies - like fluorescent lights, or LEDs.
The remaining energy is radiated as heat. Making the filament hotter should increase the percentage of visible light. I believe some lamps (like halogen lamps) do this. But the real solution is to use other technologies - like fluorescent lights, or LEDs.
The remaining energy is radiated as heat. Making the filament hotter should increase the percentage of visible light. I believe some lamps (like halogen lamps) do this. But the real solution is to use other technologies - like fluorescent lights, or LEDs.
The temperature of the layer of gas that produces the visible light of the sun is about?
The temperature of the layer of gas that produces the visible light of the sun, known as the photosphere, is about 5,500 degrees Celsius or 9,932 degrees Fahrenheit. This high temperature is what gives the sun its characteristic yellowish-white glow.
What is the difference between visible light and electromagnetic radiation?
Light, electricity, and magnetism are manifestations of the same thing called electromagnetic radiation. The energy you see coming out of the computer screen you are using to read this page is made of fluctuating electric and magnetic energy fields. The electric and magnetic fields oscillate at right angles to each other and the combined wave moves in a direction perpendicular to both of the electric and magnetic field oscillations. This energy also comes in many forms that are not detectable with our eyes such as infrared (IR), radio, X-rays, ultraviolet (UV), and gamma rays. Visible light is just apart of the electromagnetic radiations. I don't think there is a difference.
