Transistor radio

The transistor radio is a small radio receiver.RCA established a prototype transistor radio in 1952. The first profitable transistor radio, the Regency TR-1, was announced on October 18, 1954 by the Regency Division of Industrial Development Engineering Associates of Indianapolis, Indiana and put on sale in November of 1954. It cost $49.95 (the equivalent of $361 in year-2005 dollars) and sold approximately 100,000 units.

Abiotic pollination

It occurs when pollination is mediated without the participation of other organisms. For illustration, anemophily is pollination by wind. This form of pollination is very common in grasses, most conifers, and a lot of deciduous trees. Hydrophily is pollination by water and occurs in aquatic plants which let go their seeds directly into the surrounding water. About 80% of all plant pollination is biotic, of the 20% of abiotically pollinated species, 98% is by wind and 2% by water.

Troposphere

From the Greek word "τρέπω" importance to turn or mix. The troposphere is the lowest layer of the atmosphere; it starts at the surface and extends to between 7 km (23,000 ft) at the poles and 17 km (60,000 ft) at the equator, with some distinction due to weather factors. The troposphere has a enormous deal of vertical mixing due to solar heating at the surface. This heating warms air masses, which makes them less intense so they rise. When an air mass raises the force upon it decreases so it expands, doing work against the contrasting pressure of the surrounding air. To do work is to use energy, so the temperature of the air mass decreases. As the temperature decreases, water vapor in the air mass may concentrate or solidify, releasing latent heat that further uplifts the air mass. This process determines the maximum rate of refuse of temperature with height, called the adiabatic lapse rate.

Sports car

A sports car is an automobile planned for performance driving. Most sports cars are rear-wheel drive, have two seats, two doors, and are designed for exact handling, speeding up, and aesthetics. A sports car's dominant considerations can be superior road handling, braking, maneuverability, low weight, and high power, rather than traveler space, comfort, and fuel economy.

Sports cars can be either comfortable or Spartan, but lashing mechanical performance is the key attraction. Drivers regard brand name and the following racing reputation and history (for example, Ferrari, Porsche, Lotus) as important indications of sporting quality, but brands such as Lamborghini, which do not competition or build racing cars, are also awfully regarded.

A car may be a sporting car without being a sports car. Performance modifications of regular, production cars, such as sport compacts, sports sedans, muscle cars, hot hatches and the like, normally are not sports cars, yet share traits general to sports cars. Frequently, performance cars of all configurations are grouped as Sports and GT cars, or, infrequently, as performance cars.