Thermal expansion, the metal ball experiment

The metal ball shrinking in cold water The ball appears to be heated first, The atoms in heated materials will move, their vibrations moves them slightly apart, so the material will expand This is called thermal expansion The cold did the opposite More reading at – https://www.britannica.com/science/thermal-expansion

The nest of the bird, Anthoscopus minutus

A bird named Anthoscopus minutus builds its nest from spider silk and plant fibres It is generally found in the dry savannah and shrublands. So, what’s so peculiar about this bird? Its nest….. It has false entry points and blind chambers to avoid predators like snakes But that’s not all… there is something even moreContinue reading “The nest of the bird, Anthoscopus minutus”

Time lapse of Earth from the International Space Station

Absolutely breathtaking This is a time lapse of Earth from the ISS window, as it completes an entire orbit It orbits Earth at an average altitude of approximately 250 miles, travelling at 17,500 mph. At this speed ,It orbits Earth every 90 minutes.