Sunday, March 23, 2008

A Mobile Game

A mobile game is a video game has fun on a mobile phone, Smartphone, PDA, handheld computer or any type of handheld or wireless device.

Mobile games are played using the technologies current on the device itself. For networked games, there are different technologies in common use. Examples contain text message (SMS), multimedia message (MMS) or GPRS location identification.

However, there are non networked applications, which simply use the machine platform to run the game software. The games may be installed over the air, they may be side loaded onto the receiver with a cable, or they may be embedded on the handheld devices by the OEM or by the mobile operator.

Mobile games are generally downloaded via the mobile operator's radio network, but in some cases are also loaded into the mobile handsets when purchased, or via infrared connection, Bluetooth or memory card.

Sunday, March 16, 2008

Whole-house fan

Whole-house fan is a kind of fan installed in a building's ceiling, designed to suck hot air out of the building. It is occasionally confused with an attic fan.

A whole-house fan sucks hot air out of a structure and forces it into the attic. This displaces the very hot air attentive in the attic (which is pushed out the gable-end or soffit vents). Then, with windows and/or doors open to the external, the whole-house fan draws cooler outside air into the building to replace the hot air (creating a cooling breeze whilst doing so).

Attic fans, by comparison, only serve to remove some hot air from the attic; no cooling effect is supply to the actual living space.

Sunday, March 09, 2008

Origin of ice age theory

The plan that, in the past, glaciers had been far more extensive was folk knowledge in some alpine regions of Europe (Imbrie and Imbrie, p25, quote a woodcutter telling de Charpentier of the former extent of the Swiss Grimsel glacier). No single person imaginary the idea. Between 1825 and 1833, Jean de Charpentier assembled proof in support of this idea. In 1836 Charpentier influenced Louis Agassiz of the theory, and Agassiz published it in his book √Čtude sur les glaciers of 1840.

At this early stage of knowledge, what were being studied were the glacial periods within the past few hundred thousand years, during the present ice age. The far previous ice ages' very existence was unsuspected.