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Video demonstrating the operation of a touch-sensitive lamp. A touch-sensitive lamp is a combination of a lamp and a touch switch. They act on the principle of body capacitance, activated by human touch rather than a flip, push-button, or other mechanical switch. They are popular as desk and nightstand lamps. Touch-sensitive lamp switches may ...
A 50-hour-life projection bulb, for instance, is designed to operate only 50 °C (122 °F) below that melting point. Such a lamp may achieve up to 22 lumens per watt, compared with 17.5 for a 750-hour general service lamp. [76] Lamps of the same power rating but designed for different voltages have different luminous efficacy.
Table lamp c. 1900–1906 A Tiffany lamp is a type of lamp made of glass and shade designed by Louis Comfort Tiffany or artisans, mostly women, and made (in originals) in his design studio. The glass in the lampshades is put together with the copper-foil technique instead of leaded, the classic technique for stained-glass windows.
The original Berger lamp used methyl alcohol, while modern lamps use isopropyl alcohol (90% or more). [5] Perfumes or essential oils may be added. To start the catalytic process it is necessary to allow the wick to thoroughly absorb the fuel and then to light the catalytic burner with a flame and let it burn for approximately two minutes until the catalytic stone reaches the correct operating ...