Light bulbs. Coloured X-ray of an assortment of electric light bulbs. Some have screw fittings and some bayonet fittings. Each has a finely coiled filament inside a glass envelope. A fine tungsten wire (about 0.01mm thick) is wound into a helical coil, and then wound into a larger diameter helical coil. Tungsten is ideal for a filament as it is strong and has a high melting point (3410 degrees Celsius). The glass bulb is filled with an inert nitrogen/argon mixture to prevent oxidation. As the bulb runs, however, small amounts of tungsten deposit onto the glass. Eventually, this results in the filament breaking; a domestic light bulb lasts about 1,000 hours.
px | px | dpi | = | cm | x | cm | = | MB |
Details
Creative#:
TOP10228330
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
N/A
Property Release:
N/A
Right to Privacy:
No
Same folder images: