Tag: science & technology

The Oscillating (or Pulsating) Universe theory proposes that the universe undergoes endless cycles of expansion (Big Bang) and contraction (Big Crunch). This differs from the standard Big Bang theory (single expansion) or Steady State theory (continuous creation).

Isotones are atoms of different elements that have the same number of neutrons in their nuclei. This differs from isotopes (same protons, different neutrons) and isobars (same mass number but different proton/neutron counts).

Under uniform gravitational acceleration (neglecting air resistance), a projectile follows a parabolic path. The horizontal velocity remains constant while vertical velocity changes linearly due to gravity, creating a parabolic trajectory.

A vernier caliper is specifically designed to measure the distance between two opposing sides of an object (external dimensions) with high precision, typically to 0.02mm or better. It has two sets of jaws - one for external measurements and one for internal measurements. A dial indicator measures small distances or deviations, while a profile gauge replicates contours rather than measuring dimensions.

William Kennedy Dickson, working under Thomas Edison, developed an early motion picture camera in the late 1880s, known as the Kinetograph. Einstein was a physicist, Marconi worked on radio, and James Watt developed the steam engine.

Willem Einthoven invented the ElectroCardiogram (ECG or EKG) machine in 1903 and received the Nobel Prize in Physiology or Medicine in 1924 for this work. Karl Benz invented the automobile, Marconi worked on radio, and Tim Berners-Lee created the World Wide Web.

Alexander Fleming discovered penicillin in 1928 when he noticed mold killing bacteria in a petri dish. This revolutionized medicine and earned him the Nobel Prize. Guglielmo Marconi invented radio, Tim Berners-Lee created the World Wide Web, and Elias Howe invented the sewing machine.

Isaac Newton formulated the Law of Universal Gravitation in 1687, explaining the force that attracts objects with mass toward each other. Laszlo Biro invented the ballpoint pen, Thomas Edison developed the light bulb and phonograph, and the Wright Brothers achieved the first powered flight.

John Pemberton, a pharmacist, invented Coca-Cola in 1886 as a medicine. Laszlo Biro created the ballpoint pen, Isaac Newton discovered gravity, and Percy Spencer invented the microwave oven.

Edward Teller, a Hungarian-American physicist, is known as the 'father of the hydrogen bomb' for his work on thermonuclear weapons during the Manhattan Project. The Wright Brothers built airplanes, Isaac Newton discovered gravity, and Thomas Edison invented the light bulb.