In geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle. Both definitions are also valid for the diameter of a sphere. The word "diameter" is derived from Greek language διάμετρος ( diametros), "diameter of a circle", from δια- ( dia-), "across, through" μέτρον ( metron), "measure". Online Etymology Dictionary It is often abbreviated ..
It won the Galaxy Magazine / Simon & Schuster contest for 1955's best work of science fiction.The Company, a powerful, efficient, and thoroughly monstrous insurance organization, controlled the entire world. It scientifically regulating every aspect of lif..
Pronto Pike had punched longhorns along the Rio Grande and ridden the rails back East, but he'd never been in a spot like this before. It had begun with a bitter standoff between a powerful rancher and a homesteading Irishman. It escalated into missing cat..
It comes with a 110 volt power supply that will work with 220 volt transformers. It has a large easy to read display and a power packed bed shaker and has a battery backup in case of power failure. SB200ss Features: Travel & Bedside Alarm Clock, Large Brig..
It has Sleek design which fits perfectly in the palm of your hand. Includes a 12-Volt DC power adapter for vehicle charging as well as a household AC power adapter for home charging. 110-120v Rechargeable Pump Features: Product # 66621E, 110-120 Volt Recha..
This unit comes equipped with one grounded AC receptacle and a 5-Volt USB output, allowing you to power and charge a wide variety of devices. It also has modified sine wave, thermal shutdown and reverse polarity protection. In addition, the CPI200CH has lo..
These filters will render your photos clearer, sharper and with more contrast. For those who enjoy outdoor photography, especially distant vistas, a UV filter can produce a more distinct image by removing much of the color aberration normally associated..
This unit comes equipped with two grounded AC receptacles and a 5-Volt USB output, allowing you to power and charge a wide variety of devices. The CPI1000 features a modified sine wave, thermal shutdown, reverse polarity protection, low voltage shutdown, l..
This replacement battery is compatible with Petsafe's Nano Bark Control Collar, Comfort Fit Little Dog Receiver and Big Dog Bark Collar. An easy to use coin slot means quick installation, in either direction with the product maintaining functionality while..
These are small but mighty coin cell batteries to power your dog's small collar. These batteries are compatible with PetSafe PDBDT-305 and PDLDT-305 remote trainers. RFA-35-11 Features: 3 Volt Lithium Batteries - 2 Pack, Coin Size Cell Batteries, Can be us..