Connecting a light bulb's electrical contacts to the positive and negative terminals of a battery causes it to turn on and to draw power from the battery. The key to successful connection and operation is matching the bulb's operational range with the battery's voltage.Know More
Contacts differ from bulb to bulb. Some are prongs extending from the bulb's base below the threading while others include a threaded contact and another, smaller one without threads extending from the base. Spring contacts, found in most flashlights, are a good connector.
Good combinations of bulbs and batteries according to capacity include:
Batteries improperly matched to light bulbs will not light the bulbs effectively. If their voltage is too low, the bulb will produce no light. If it is too high, the bulb's filament could be vaporized and the bulb will be rendered useless. A close match might work, but it is unlikely to be as effective as a perfect match between voltage and capacity. Bulbs function inside a target temperature range rather than on a spectrum of effective light production.Learn more about Physics
To make a light bulb at home, put two pieces of copper wire through a cork stopper lid into a jar and twist iron wire around the copper wire. Then attach the copper wire pieces to a six-volt battery for an instant light bulb.Full Answer >
A flicker-flame light bulb is a light bulb that is designed with a carbon filament that oscillates inside the glass and creates a flickering effect. Flicker-flame light bulbs have lower wattage power than standard light bulbs, and the flickering effect can occur only if the bulbs are installed vertically.Full Answer >
Thomas Edison is typically credited with inventing the light bulb in 1879. However, he was not the only person in history to have contributed to the development of the modern incandescent light bulb.Full Answer >
A type A light bulb is the typical incandescent light bulb. It has a round top and a tapered bottom that allows it to be screwed into most light fixtures, and it can come in a brightness of 40, 60, 75 or 100 watts, although those wattages are being phased out in favor of lower-wattage, energy-efficient replacements with equivalent brightness.Full Answer >