First Indian woman to participate in Olympics?

William Gray, inventor of the pay telephone, also invented the inflatable chest protector worn by baseball umpires and catchers.

H+ is a hydrogen ion, and it is an ion because it LOST an electron. Electrons are negatively charged. When an atom gains electrons it will have NEGATIVE charges.

So it has zero electron.

The first wireless remote control for television was called Flashmatic. (Remember when you had to get up to change the channel?)

It's commonly used for MP3 players, computer BIOS code and "thumb" drives. Originally developed in Japan by Toshiba, it has become quite popular for products requiring non-volatile erasable memory. Flash devices have a limited number of erase cycles (typically 10,000 to 1,000,000 cycles) so they're not as good a choice for applications in which the data changes constantly. However, since it has no moving parts (unlike a hard disk) it is an excellent choice for storing the operating code for small personal electronics like PDAs, cell phones, digital cameras, and the data in items like MP3 players.

Madhubani painting or Mithila painting is a style of Indian painting, practiced in the Mithila region of Bihar state, India and the adjoining parts of Terai in Nepal. Painting is done with fingers, twigs, brushes, nib-pens, and matchsticks, using natural dyes and pigments, and is characterized by eye-catching geometrical patterns. There are paintings for each occasion and festival such as birth, marriage, holi, surya shasti, kali puja, Upanayanam (sacred thread ceremony), and durga puja.

Source: http://en.wikipedia.org/wiki/Madhubani_art

Leslie R. Groves, however, was the military head of the project and the overall supremo, while Robert Oppenheimer was the scientific director. The world's first atomic bomb was exploded in the New Mexico desert on July 16, 1945.

On April 6, 1914, Hiram Percy Maxim proposed the formation of the American Radio Relay League.