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UV has higher energy (per photon) than visible light.

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Why is there no substance that convert visible light to UV?

There is no substance that can directly convert visible light to UV because the energy required to promote electrons from the visible light energy levels to the UV energy levels is too high within a single step. The energy levels of the electrons in UV are simply too far apart from those in visible light for a direct conversion to occur.


Does UV have a longer wavelength or visible light?

Infrared has a smaller wavelength than microwaves.


If you compared the frequencies of UV light an visible light you and rsquod find that the UV light had a smaller frequency.?

UV has a HIGHER frequency than visible light. If you get such results, either you are not measuring the correct light, or something else is wrong with the measurement.


Why do UV tubes glow blue even though UV radiation is invisible to the human eye?

UV tubes contain a phosphor coating that absorbs UV radiation and re-emits it as visible light, giving off a blue glow. This visible light is what we see, even though the UV radiation itself is not visible to the human eye.


Does a fluorescent bulb specificaly phosphorus reflects ultraviolet radiation.?

There is no phosphorus in a fluorescent lamp, the coating is a compound called phosphor.phosphorus is an element that burns.phosphor is a compound that when excited by an electron beam, UV light, or x-rays glows in visible light.A fluorescent lamp is a mercury vapor UV (aka black light) lamp with a phosphor coating on the inside of the lamp tube to turn the invisible UV light to visible light.

Related Questions

Why is there no substance that convert visible light to UV?

There is no substance that can directly convert visible light to UV because the energy required to promote electrons from the visible light energy levels to the UV energy levels is too high within a single step. The energy levels of the electrons in UV are simply too far apart from those in visible light for a direct conversion to occur.


How do plants convert UV rays into food?

they don't convert UV into food, but they can convert visible light into food through photosynthesis. UV can be damaging to the plant and is one of the reasons they have a waxy cuticle covering the leaves


Why do some materials glow in ultraviolet - UV - light?

UV light is invisible to the human eye, which is why it is sometimes referred to as 'black light'. However, some materials (e.g. DayGlo) can absorb UV energy and convert it into visible light energy. They are said to be fluorescent.


What produces uv light?

UV light is produced by various sources including the sun, black lights, tanning beds, and UV lamps. Specialized materials can also convert visible light into UV light, such as fluorescent materials in fluorescent bulbs.


Does a UV light show fingerprints?

Yes, a UV light can show fingerprints by highlighting bodily fluids and oils left behind on surfaces. These substances fluoresce under UV light, making fingerprints visible that may not be seen with the naked eye.


Visible light fits between x-rays and uv?

No, the visible light region is between Infra-red and UV.


How can you see the UV light in laminar air flow otherwise usually you cant see the uv ray?

UV light in laminar airflow can be seen by introducing a UV light-reactive substance, such as fluorescein or UV powder, into the air. When UV light interacts with these substances, they emit visible light, allowing you to visualize the airflow patterns. This technique is commonly used for testing and validating the effectiveness of laminar air flow systems.


What color are UV rays?

Colour only applies to visible light. UV rays are not visible.


Does UV have a longer wavelength or visible light?

Infrared has a smaller wavelength than microwaves.


If you compared the frequencies of UV light an visible light you and rsquod find that the UV light had a smaller frequency.?

UV has a HIGHER frequency than visible light. If you get such results, either you are not measuring the correct light, or something else is wrong with the measurement.


How long is semen visible on skin in UV or black light after you wash?

Yes, you can use a black light on bed sheets or where-ever and the semen will be visible.


How do you make a distinguish between UV and VIS?

The only difference, between ultra violate light and visible light, is their frequencies, UV has higher frequency than visible and since wavelength x frequency = the speed of light (which is constant at 3x108 ms-1), therefore wavelength is higher in UV. UV light is also not visible, unlike visible light! so, in summery the difference is frequency and wave length.