Tag: science & technology

Polaroid sheets are polarizing filters that block light waves oscillating in specific directions, effectively reducing glare and controlling light intensity. This is why aircraft windows use polarized glass for passenger comfort and visibility.

Simone Giostra is credited with inventing SolPix, a solar-powered LED display system that combines renewable energy with digital art. The other names listed are not associated with this specific invention.

Dr. Martin Cooper invented the first handheld mobile phone at Motorola in 1973, making the first public call from a cellular device. The other scientists listed made contributions in different fields but not mobile telephony.

John Shepherd-Barron invented the ATM in the 1960s, with the first machine installed at Barclays Bank in London. The spacing in his name may be a formatting issue. The other names are not associated with ATM invention.

Chester Carlson invented the xerographic process in 1938, which became the foundation for Xerox copying machines. His invention revolutionized document duplication. False would be incorrect.

Alexander Graham Bell invented the telephone in 1876 and patented it. Thomas Edison invented the light bulb, James Watt improved the steam engine, and Charles Darwin proposed evolution theory.

The adult human body has 206 bones. This number decreases from 270+ at birth due to bone fusion during development. Options A (990), C (106), and D (200) are all incorrect.

Nicolaus Copernicus formulated the heliocentric model (earth revolves around sun) in the 16th century. Newton discovered gravity, Dalton proposed atomic theory, and Einstein developed relativity.

A seismograph measures earthquake intensity and records seismic waves. Barometer measures air pressure, hydrometer measures liquid density, and polygraph detects lies.