Tag: science & technology

Percy Spencer invented the microwave oven in 1945 while working at Raytheon. He discovered microwave heating when a chocolate bar in his pocket melted near a magnetron he was testing. The first commercial microwave, the Radarange, sold in 1947. Alan Blumlein worked on stereo sound, Joseph-Armand Bombardier invented snowmobiles, and Christiaan Huygens studied wave optics.

Rowland Hill invented the postage stamp system, introducing the Penny Black in 1840 in Britain. His reform made mail affordable and prepaid, proving successful. Before this, postage was expensive and paid by the recipient. Sir Henry Cole invented Christmas cards, Trevor Baylis the clockwork radio, and J. Stuart Blackton was a film pioneer.

A manometer is the instrument used to measure pressure, particularly gas or liquid pressure relative to atmospheric pressure. It typically uses a U-shaped tube filled with liquid. Saccharimeter measures sugar concentration, ammeter measures electric current, and lactometer measures milk density. Manometers are essential in physics, engineering, and medical applications like blood pressure monitoring.

The cell is the basic structural and functional unit of all living organisms. Cells are the smallest units that can carry out all life processes including reproduction, metabolism, and response to stimuli. Genes, chromosomes, and organelles are all components within cells.

Newton's first law states that an object remains at rest or in uniform motion unless acted upon by an external force. The question incorrectly phrases it as 'force, inertia must act' - inertia is the property that resists change in motion, not something that acts. The correct concept is that force causes change in motion.

Blaise Pascal (not 'Blaze') invented the Pascaline, one of the earliest mechanical calculating machines in 1642. This device could perform addition and subtraction and was a precursor to modern computers. The name 'Blaze' appears to be a typo.

Google was founded in January 1996 as a research project by Larry Page and Sergey Brin, who were Ph.D. candidates at Stanford University at the time. They developed their PageRank algorithm while working on the Stanford Digital Library Project, and the search engine was initially hosted on the university's domain (google.stanford.edu) before being incorporated as a company in 1998.

Google's famous '20% time' policy encouraged engineers to spend one day per week (20% of their time) on projects they were passionate about, outside their core responsibilities. This innovation policy led to groundbreaking products like Google News, Orkut, Gmail, and AdSense. Though the policy was officially discontinued in 2013, it remains a case study in fostering innovation within large organizations.