Warnings. The nit is the standard unit of luminance used to describe various sources of light. NIT is a metric for measuring luminance, which is how much light an object emits. Discard the nit or louse on a tissue or by running the comb under warm water. It comes from the Latin Nit ere, which means “to shine.” NIT is equivalent to Candela (cd/m 2), but is not part of the International System of Units (abbreviated SI, from Systeme International, in French). What we commonly call “nits” are actually the eggs of very small insects known as head lice. 1 NIT = 1 cd/m 2 A measurement of the brightness of light. Nits are small white or yellowish-white specks that are usually found close to the scalp, around and behind the ears, and at the nape of the neck. Nits are small, oval shaped and usually a yellowish-white color and are firmly attached to the side of hair shafts. Simply having nits does not necessarily mean that your child has live lice, though, since some nits may be empty egg casings … And head lice are found nowhere else on the planet except in human hair. Nits is a unit that measures brightness in terms of area, or in technical terms, candela (a standard unit of light equivalent to the light produced by a single candle) per square meter. In order to eliminate a head lice infestation, both hatched lice and nits must be killed or otherwise removed from their host’s scalp. Well, in order to have nits, you had to have had an adult female lay them, as they can’t transfer by any other method. It takes about 7 to 10 days for a newly hatched louse to grow into an adult and start to lay eggs. You should look for nits close to the scalp, rather than at the end of the hair. They're difficult to see, but you can feel them if you run a fingernail down the hair shaft from the scalp. One nit is equal to one candela (one candlepower) per square meter (1cd/m2). Unlike dandruff, you cannot easily brush out nits. A higher rating means a brighter display. If you find nits further down the hair, more than 1⁄4 inch (6mm) away … Avoid head-to-head contact with other people. The sun at noon is rated at 1.6 billion nits. Nits look like dandruff but stick strongly to hair. The nits value of a monitor is usually mentioned on its box, or on the manufacturer’s website. Nits are the empty yellow-white eggshells which are left when the lice hatch. This is how lice usually transfer from person to person. Remove nits or live lice with either your fingernail or fine-toothed comb. Your screen, whether it’s an internal one or an external one, outputs a certain number of nits and this measurement is a part of its basic specifications. Oval-shaped nits are about the size of a knot in thread. 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