Explore: Early Dials

Radium dials are watch, clock and other instrument dials painted with luminous paint containing radium-226 to produce radioluminescence. Radium dials were

rotary dial's legacy remains in the verb "to dial (a telephone number)". From as early as 1836 onward, various suggestions and inventions of dials for sending

Portable dials are self-aligning: for example, it may have two dials that operate on different principles, such as a horizontal and analemmatic dial, mounted

Shaftesbury Avenue. The Dials comprise Earlham Street, Monmouth Street, Mercer Street and Shorts Gardens. The area now known as Seven Dials also includes Neal

then, most dial-up access has been replaced by broadband. In 1979, Tom Truscott and Jim Ellis, graduates of Duke University, created an early predecessor

the "power dialler" form, whereby agents do not become party to the call until the called party has picked up. A power dialler usually dials as many (as

recognized as early as the 1910s that push buttons were faster than rotary dials, when the first panel switches used keys for dialing at the operator

reaching subscribers in foreign countries or areas by international direct dialing (IDD). Country codes are defined by the International Telecommunication

workers who contracted radiation poisoning from painting radium dials – watch dials and hands with self-luminous paint. The incidents occurred at three

in cases where known. Dialling codes do not correspond to specific political boundaries: for example, the Coventry dialling code covers a large area