History of computers: A brief timeline | Live Science
Dec 22, 2023 · 1937: John Vincent Atanasoff, a professor of physics and mathematics at Iowa State University, submits a grant proposal to build the first electric-only computer, without using gears, cams, belts ...
20 inventions that changed the world | Live Science
Jul 19, 2023 · 18. Nuclear energy. 19. Vaccines. 20. X-rays. Humans are naturally curious and creative, two traits that have led our species to many scientific and technological breakthroughs. Since our earliest ...
The 20 largest recorded earthquakes in history | Live Science
Jan 27, 2023 · 15. Atacama, Chile; 1922; magnitude 8.5. A black and white photograph showing the damage caused by the Vallenar earthquake in 1922. (Image credit: By Gustavo Bruzzone Rocco - Unknown source ...
The difference between prokaryotic and eukaryotic cells? - Live …
Jan 18, 2022 · Eukaryotic cells have many chromosomes which undergo meiosis and mitosis during cell division, while most prokaryotic cells consist of just one circular chromosome. However, recent studies have ...
Human heart: Anatomy, function & facts - Live Science
Jul 27, 2022 · In humans, the heart is roughly the size of a large fist and weighs between about 10 and 12 ounces (280 and 340 grams) in men, and between 8 and 10 ounces (230 and 280 grams) in women, according ...
Darwin's Theory of Evolution: Definition & Evidence - Live Science
Oct 14, 2022 · The incorporation of genetics into Darwin's theory is known as "modern evolutionary synthesis." The physical and behavioral changes that make natural selection possible happen at the level of DNA ...
What's inside Earth? - Live Science
Oct 9, 2023 · The liquid iron outer core swirls around the inner core, giving Earth its magnetic field. Our planet formed around 4.6 billion years ago, and as it cooled, heavier elements such as iron and nickel ...
What is visible light? - Live Science
May 23, 2022 · Visible light is a type of electromagnetic radiation, which is transmitted in waves or particles at different wavelengths and frequencies. This broad range of wavelengths is known as the ...
Squirrels: Diet, Habits & Other Facts | Live Science
Jun 27, 2014 · Grey squirrels, commonly found in North America, are medium-size squirrels. They grow to 15 to 20 inches (38.1 to 50.8 cm) in length, with their tails adding an extra 6 to 9.5 inches (15.24 to 24. ...
Periodic Table of Elements - Live Science
Jan 5, 2022 · The periodic table is arranged by atomic weight and valence electrons. These variables allowed Mendeleev to place each element in a certain row (called a period) and column (called a group). The ...