metal
22 Aug 2018
Potassium -The metal that explodes when exposed to water
The element potassium explodes with a purple flame when exposed to water. Normally, water is used to douse fire. So explosion of potassium when in contact with water is an exception and incredible feat. The element has an atomic number of 19. The atomic symbol is K. It comes from its Latin name Kalium, meaning
07 Aug 2014
Electric fuse: Basics ought to be known
Electric current flow in any circuit generates a lot of heat which is unavoidable. This heating effect of current is called Joule’s effect. Electric appliances like laundry iron, toaster, oven, kettle and heater are some of the devices that work based on Joule’s heating effect. The heat generated by current flow tends to increases the