Many homeowners are unaware of the common electrical hazards lurking in their homes. These can include faulty wiring, overloaded outlets, and improperly used appliances. Recognizing these hazards allows you to take proactive measures to avoid potential disasters. Always keep an eye out for frayed wir...
Alexander Graham Bell had the idea of passing speech by electrical impulses and invented the first telephone in 1876. The invention of the “wireless” by Guglielmo Marconi in 1895 made the way for modern-day radio transmission. V.K.Zworykin worked on one of the first televisions in 1928. ...
When the light-receiving portion 2250 photoelectrically converts the light transmitted through the rotatory polarizing portion 2210 into an electrical signal, a sine wave is developed as indicated by a' in FIG. 4. Namely, when the polarizing direction (corresponding to the direction of the guide ...