about telling the time, i haven't taught her that at home, but they are learning it in school and she's pretty good at telling the time now. Hi my son could tell the time quite early on, he's very academically bright, so could tell time at 4 years, he could tie his tie at 5/6 years, and tie laces at 8 1/2.
These 10 facts about space will blow your mind. External combustion is a process in which a device, such as a motor or engine, is powered by fuel burned outside of the device. It is an alternative to traditional combustion engines, where fuel is burned within the engine itself.
Internal combustion engine. The internal combustion engine is a heat engine in which combustion occurs in a confined space called a combustion chamber. Combustion of a fuel creates high temperature/pressure gases, which are permitted to expand. The expanding gases are used to directly move a piston, turbine blades, rotor(s), or the engine itself thus doing useful work. Internal combustion engines can be powered by any fuel that can be combined with an oxidizer in the chamber.