By far the most brightest (to the human eye) of all. An amazing 100 LED lights. And because it takes so many batteries, it keeps going for quite a long time.
Takes six AA batteries (included).
Size: total length 190mm, 7½ inches + the head 25mm, 1 inch). Width of handle 35mm, 1¼ inches (head is 75mm, 3 inches dia.)
Weight including battery: 185g
Light source: 100 LEDs.
Wavelength: 390 - 395nm
Takes six AA batteries.
Best alkaline (typically £1.00 to £1.50 per battery*):
- brightest for 5 hours (2hrs at its very brightest then 3hrs not quite so bright)
- then, over the next 3 hours, it gradually dims, it still "works" but not at its best
- it is still 'lit' for another 12 hours but too dim to be of use
Cheapest (typically 10p to 20p per battery*):
- brightest for: 2 hours (1hr at its very brightest then 1hr not quite so bright)
- then, over the next 2 hours, it gradually dims, it still "works" but not at its best
- it is still 'lit' for another 8 hours but too dim to be of use
* This is just an example of the quality of battery, standard alkaline batteries are supplied with this item.
- what it is (and fascinating facts)
- different types (and their applications)
- general examples of items lit by UV light
Photos of what you will see with this (and other) UV lights:
- Paper (banknote, stamp, security marking)
- Uranium glass
- Porcelain repair detection
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