Tag: science & technology

Charles Babbage designed the first mechanical computer, the Analytical Engine, earning him recognition as the 'father of the computer'. Edison worked on electrical devices, Mac Millan was a publisher, and Rangabhashyam is not associated with computing.

Sir Isaac Newton does not have an element named after him, unlike the other three scientists. Rutherfordium (Rf, 104) honors Ernest Rutherford, Seaborgium (Sg, 106) honors Glenn Seaborg, and Curium (Cm, 96) honors Marie Curie. Despite Newton's monumental contributions to physics, no element bears his name.

The shoulder joint (glenohumeral joint) is a ball-and-socket joint, where the rounded head of the humerus fits into the shallow glenoid cavity of the scapula. This structure allows wide range of motion in all directions. Hinge joints bend only one way (like elbows), pivot joints rotate (like the neck), and fixed joints don't move (like skull bones).

Earth's 23.5-degree axial tilt causes different hemispheres to receive varying amounts of direct sunlight throughout the year, creating seasons. When the Northern Hemisphere tilts toward the Sun, it's summer there; when it tilts away, it's winter. Day and night are caused by Earth's rotation, not tilt.

The moon's phases depend on its orbital position relative to Earth and Sun. As the moon orbits Earth, the angle between Earth, moon, and Sun changes, altering how much of the moon's illuminated half we can see from Earth. The moon's position in its 27.3-day orbit determines whether we see a crescent, quarter, gibbous, or full moon.