Kilogram: Mass and Planck's Constant

New definition of the kilogram comes into force – Physics World

Define one kilogram, the S.I. unit of mass. | Shaalaa.com

Rare Footage of the attack on USS Bunker Hill on this day in 1945.On the morning of 11 May 1945, while supporting the invasion of Okinawa, Bunker Hill was struck and severely damaged by two Japanese kamikaze planes. A Mitsubishi A6M Zero fighter plane piloted by Lieutenant Junior Grade Seizō Yasunori emerged from low cloud cover, dove toward the flight deck on the starboard quarter and dropped a 550-pound (250 kilogram) bomb that penetrated the flight deck and exited from the side of the ship at