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Krypton, Kr, 36, is the next in the noble gas series(preluded by helium, neon, and argon). Besides the normal aspects of noble gases, being inertness, it isn't particularly special, it is however rare and somewhat expensive.

Krypton, when plasmatized, makes a very brilliant off-white color simliar to xenon, so can be used for very precise color adjustments in flash bulbs for photography, and is also sometimes used in neon signs for a bright white color.

The length of the meter was originally defined as the length of a platinum-iridium bar of metal that was kept very safe in Paris, but even this had it's inconsistancies, so it was changed to a certain number of wavelengths of the orange light krypton gives off when plasmatized. Eventually this standard was replaced with how much time it takes light to travel a meter, so is no longer used.

It has a radioactive synthetic isotope, Kr-85, which has a half-life of about 10 years, and is sometimes used to fill devices that require a small amount of ionization, such as fluorescent lamps which need ionization to help them start, or voltage arrester tubes, which will divert electricity away from some presumably valuable component if the voltage gets dangerously high.

These are my samples!

Krypton Flashlight Bulbs

These small incandescent flashlight bulbs contain some krypton (I don't know how much) which helps stop the filament from corroding (Because krypton is inert and will not corrode the tungsten filament) and also adds a little more white light due to the light ionization of krypton around the hot filament. Some people don't believe krypton does any good or that there is actually any in these bulbs, I've been working out a way to test though, I'll change this when I figure it out.

Date added(year-month-day):20110906, sample number:59

Tags(Elements in sample):krypton, vacuum

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