Edison put together a practical light bulb on October 22, 1879. Wikipedia has a great article on the electric light bulb, including its history. Why not drop by and skim it?
The heaviest metal found on earth naturally (not produced in a lab) is plutonium with an atomic weight of 244. Uranium's is 238. Lead is 207. Osmium is 190. Gold is 196. Mercury is 200. No other metal which occurs in nature has a higher atomic weight than plutonium. Note: Even though plutonium was first … Read more
- Number of protons present in the nucleus of an atom is called the atomic number of an element. It is denoted by Z. Combined number of protons and neutrons present in the nucleus of an atom is called the mass number of an element. It is denoted by A. The atomic and mass numbers … Read more
The telescope was actually made to spy on warships(during war). The actual creator was Hans Lippershey who was a lens maker and he used it for it. Also the first name of the telescope was spyglass.
Well I have read that it is 8 minutes 17 seconds to be exact but I think that it depends on the distance of the earth from the sun. Well,an answer of 8 minutes should also do.
Fresh water freezes faster because if salt is mixed with water then it's freezing point decreases rapidly.that;s why it freezes later.