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.
There are two main types of heat engines: external combustion and internal combustion: 1  In an external combustion engine, the fuel burns outside and away from the main bit of the engine where the force and motion are produced. 2  In an internal combustion engine, the fuel burns inside the cylinder.