- The measurement of the number of times a repeated event, generally a waveform, occurs in a given time frame usually expressed in Hertz, abbreviated Hz, or cycles per second. . Used . . Used . ...Ohm
- A unit of measurement for the electrical resistance equal to that of a conductor in which a current of one ampere is produced by a potential of one volt across its terminals. One ohm is the resistanc. Used . e in a circuit when one volt maintains a current of one amp. The unit, originally ohma or ohmad, was first used by Charles Tilston Bright and Latimer Clark in 1861 and is still in use today.. Used . ...Lens
- A lens is a device for either concentrating or diverging light, usually formed from a piece of shaped glass. Analogous devices used with other types of electromagnetic radiation are also called lense. Used . s: for instance, a microwave lens can be made from paraffin wax.
The earliest records of lenses date to Ancient Greece, with Aristophanes' play The Clouds (424 BC) mentioning a b. Used . urning-glass (a convex lens used to focus the sun's rays to produce fire). The writings of Pliny the Elder (23-79) also show that burning-glasses were known to the Roman Empire, and mentions what is possibly tAmphitheatre
- The name amphitheatre (alternatively amphitheater) is given to a public building of the Classical period (being particularly associated with ancient Rome) which was used for spectator sports, games an. Used . d displays.
Apart from function, the important outward distinction between an amphitheatre and a theatre is that an amphitheatre is round or oval in shape (whereas a classical th. Used . eatre was semi-circular). However, an amphitheatre differs from a circus, which was used for racing and looked more like a very long, narrow horse shoe.
The best-known amphitheatre in the world is...Address
- In computer science, a memory address is a unique identifier for a memory location at which a CPU or other device can store a piece of data for later retrieval. In modern byte-addressable computers, e. Used . ach address identifies a single byte of storage; data too large to be stored in a single byte may reside in multiple bytes occupying a sequence of consecutive addresses. Some microprocessors . Used . were designed to be word-addressable, so that the typical storage unit was actually larger than a byte. Examples include the Texas Instruments TMS9900 and the National Semiconductor IMP-16, both of which used ...