But the halogen bulbs still qualify as incandescents, meaning they create light by passing electricity through a metal filament until it becomes so hot that it glows. Congress did not ban incandescent ...
Zunächst befreiten kleine, flache LED-basierte Lichtquellen die Hersteller von der Notwendigkeit, das Design an eine Vakuumröhre anzupassen. Jetzt sind Designer frei, den Begriff Lichtqualität zu ...
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