Pure neon gas glows bright red-orange when placed in a vacuum and an electric current runs in its presence. Neon signs that have colors other than red-orange have other gases included.

Neon is red, helium is orange, argon is lavender, krypton is gray or green, mercury vapor is light blue, and xenon is gray or blue.

Aqua and Lime are our brightest colors. Lime in Angel Hair 1.2mm looks bright yellow when unlit. Yellow in Angel Hair 1.2mm looks orange when unlit.

Neon Red is a red color that has radiance within the colors between Orange and Purple.

Types of Neon Colors

• Green—Neon (or “UFO”) Green, Electric Lime.
• Red—Bright Red, Electric Orange.
• Blue—Electric Blue, Electric Cyan.
• Pink— Neon (or “Plastic”) Pink, Neon Magenta.
• Purple—Bright (or “Proton”) Purple.
• Yellow—Neon Yellow, Bright Chartreuse, or Absinthe.

Most neon colors will glow in the dark underneath black lights. The most common colors to use are fluorescent orange, green, yellow and pink. White glows in a blueish looking color underneath black lights.

Just as human body secretions are visible under a black light, so are the urine, feces and other body secretions of animals. Black lights are useful for finding the unknown location of pet urine odors and for finding evidence of rats or mice lurking in your home.

The brighter the neon color the greater the chance that the item will glow. Fluorescent green, pink, yellow, and orange are the safest bets. You can get lucky with some purple, red and blue colors though these colors tend to be a little more hit and miss.

Biological Fluids Beneath a black light, blood turns black, unless sprayed with luminol which gives it a blue-glow. Saliva, semen and urine also glow when hit with a black light.

Ultraviolet light can kill mold in air and on surfaces. It’s effective at treating the mold you know about, and can help kill mold, including airborne spores that you can’t see.

Criminal investigators use black lights to detect semen because they’re portable and easy to use. Semen stains can also be detected by sight, by touch (feeling for crusty residue or crunchiness in fabrics), and chemical testing, but UV is rapid and hands-off.

On dark colored materials a dried semen stain will appear to be a hard crusty white stain. On white material a dried semen stain may actually appear to be clear and can even sometimes be almost invisible.

Thiamine, riboflavin, niacin, fluids and vitamins shine under black light. Urine, semen and blood contain fluorescent molecules, so they also show up under black light. Interestingly, some cleaners and laundry detergents, scorpions, tonic water and antifreeze and teeth whiteners all also glow under black light.

Beneath a black light, blood turns black, unless sprayed with luminol which gives it a blue-glow. Saliva, semen and urine also glow when hit with a black light. Most biological fluids contain fluorescent molecules to help them glow.

Semen happens to glow the brightest because of its particular mix of chemicals. This is because bodily fluids fluoresce – that means they absorb ultraviolet light and re-emit it as visible light.

A black light gives off harmless, highly energetic, ultraviolet (UV) light that is invisible to humans. Certain fluorescent substances absorb ultraviolet light and re-emit it at a different wavelength, making the light visible and the material appear to glow.

Rather than putting your nose to the floor trying to discover where that smell is coming from, you can find dried urine stains on carpet and furniture with a blacklight. Wavelengths in a blacklight cause phosphorous and proteins in the urine to glow, making it easier to spot old stains.

To summarize: A blacklight cannot identify bacteria in your home. All it will do is show you traces of bodily fluids.

The visible leakage from a black light stimulates both “red” and “blue” receptors in your eye, and you perceive purple.

Blacklight is a specific type of (mostly) UVA light that looks dark purple – at least the small amount of light that is in the visible spectrum wavelength. Only the longest wavelengths of black light translate to deep purple (the first color in the visible spectrum).

Black lights, ironically, not only produce more visible light than blacklight blue bulbs, but the light from a black light is actually bluer. (The blacklight blue bulb’s light is more purple, or violet.) Insects can see the emitted UV light and are attracted to it.

There is no evidence to suggest that insect traps using ultraviolet black light increase your risk of developing skin cancer, as the amount of ultraviolet radiation they emit is very low. Black lights emit a type of ultraviolet radiation called UVA, which is invisible to the human eye.

(Never leave an incandescent black light unattended—in fact, avoid having them, buy an LED or fluorescent UV bulb instead, they’re much safer, more efficient, and will last much longer.) But even non-incandescent UV bulbs (blacklights) should probably be turned off.

The electronics in fluorescent bulbs and light emitting diodes (LED), rather than ultraviolet radiation, cause increased malignant melanoma incidence in indoor office workers and tanning bed users.

Studies have shown that using our UV-emitting electronic devices up to bedtime (and even while in bed,) disrupts the sleep cycle by suppressing the production of melatonin (the “go to sleep” chemical). In nature, melatonin production decreases in daylight and increases when it gets dark.

Strictly speaking, a black light is a kind of UV light. Black lights emit ultraviolet radiation (UV light). UV is radiation with a wavelength just shorter than that of violet light, which is the shortest wavelength of light in the visible part of the electromagnetic spectrum.

Black light is nothing but UVA light, while UV light is basically composed out of UVA, UVB and UVC. So in other words, black light is UV light(450-100nm), covering the 400-320nm spectrum.

Since fungus likes dark places, does uv light kill fungus? The UV light is effective because it is able to penetrate through the nail to the back side where the fungus usually starts and continues reinfecting.

Natural abundance Neon is the fifth most abundant element in the universe. However, it is present in the Earth’s atmosphere at a concentration of just 18 parts per million. It is extracted by fractional distillation of liquid air.

The gas element neon actually only produces a red-orange color, but the word neon can broadly apply to a wide range of fluorescent and ultra-bright colors. There is a fluorescent or ultra-bright version of almost every primary and secondary color, including: Green—Neon (or “UFO”) Green, Electric Lime.

Neon was discovered in 1898 by British chemists William Ramsay (1852-1916) and Morris Travers (1872-1961). It occurs naturally in the atmosphere, but only in very small amounts. Neon has relatively few uses. The most familiar is neon lighting.

The following acute (short-term) health effects may occur immediately or shortly after exposure to Neon: * Direct skin contact can cause frostbite. * High exposure can cause fatigue, vision disturbance, headache, confusion, dizziness and suffocation from lack of Oxygen.

Neon is a rare atmospheric gas and as such is non-toxic and chemically inert. Neon poses no threat to the environment, and can have no impact at all because it’s chemically unreactive and forms no compounds.

The key properties of neon include the following:

• It is a colorless, tasteless odorless inert gas.
• It changes to reddish-orange color in vacuum tube.
• It is chemically inactive.
• It has the lowest liquid range of any element.

Because it is very unreactive, helium is used to provide an inert protective atmosphere for making fibre optics and semiconductors, and for arc welding. Helium is also used to detect leaks, such as in car air-conditioning systems, and because it diffuses quickly it is used to inflate car airbags after impact.

Morris Travers

Silicon

Metals consist of giant structures of atoms arranged in a regular pattern. The electrons from the outer shells of the metal atoms are delocalised , and are free to move through the whole structure. This sharing of delocalised electrons results in strong metallic bonding .

In a pure metal, the force needed to make the layers slide over each other is small. This explains why many pure metals are soft. The smaller or bigger atoms distort the layers of atoms in the pure metal. This means that a greater force is required for the layers to slide over each other.

Metals consist of a giant metallic structure. The atoms in a metal are arranged in a regular pattern and are closely packed together. Metallic bonding – the outer shell electrons become delocalised and surround the positive metal ions. There is a strong electrostatic force of attraction between them.

The outermost shell of each carbon atom has four electrons. In diamond, these electrons are shared with four other carbon atoms to form very strong chemical bonds resulting in an extremely rigid tetrahedral crystal. It is this simple, tightly-bonded arrangement that makes diamond one of the hardest substances on Earth.

Diamond. Diamond is a form of carbon in which each carbon atom is joined to four other carbon atoms, forming a giant covalent structure.

Metals form giant structures in which electrons in the outer shells of the metal atoms are free to move. The metallic bond is the force of attraction between these free electrons and metal ions . Metallic bonds are strong, so metals can maintain a regular structure and usually have high melting and boiling points.