Tag: science & technology

This is a commonly cited trivia fact that paper cannot be folded more than 7-8 times in half, regardless of size. The limit is due to exponential growth in thickness - each fold doubles the layers. While special cases exist with extremely long paper, 8 times is the widely accepted practical limit.

Sound travels approximately 1,500 meters per second in water compared to about 340 meters per second in air. The ratio is roughly 4.4:1, so '4 times faster' is the closest approximation among the options. This difference occurs because water is denser and less compressible than air, allowing sound waves to propagate more efficiently.

Adults have 206 bones after bones fuse together during growth. Babies are born with around 270-300 bones (commonly cited as 300), many of which fuse through childhood. For example, the skull starts as multiple separate plates that join together, and the sacrum and coccyx fuse from several vertebrae into single bones.

General Electric (GE) held the #1 spot on the Fortune 500 list for many years during the mid-20th century under leaders like Jack Welch. While the exact count may vary, GE was frequently the top-ranked company by revenue for decades. Fortune 500 began in 1954, and GE dominated the list through much of its history.

Takshashila (Taxila) University, dating back to around 7th century BCE, is widely regarded as one of the world's earliest universities. Located in ancient India (now Pakistan), it attracted scholars from across Asia. Nalanda, established later around 5th century CE, was another major ancient center of learning. Both were renowned educational institutions.

This quote is attributed to Mahatma Gandhi, reflecting his philosophy of personal transformation as the foundation of social change. While the exact wording may be a paraphrase of his broader teachings, the sentiment aligns with Gandhi's emphasis on being the change one wishes to see. He spoke and wrote extensively about this principle of leading by example.

The universe is expanding due to dark energy. While the exact rate in miles per hour is not standard scientific notation, the concept reflects cosmic expansion at approximately 70 km/s/Mpc (Hubble constant). This trivia question uses 'billion miles per hour' as a simplified representation of continuous expansion in all directions.

IBM established a 'Distinguished Engineer' title as part of its technical career ladder, recognizing engineers with sustained records of invention and industry recognition. This technical track parallels management paths, allowing individual contributors to advance without moving into management roles. IBM is known for its strong technical career progression system.

Light is an electromagnetic wave that propagates as transverse waves, meaning the electric and magnetic field oscillations are perpendicular to the direction of wave propagation. This transverse nature is why light can be polarized, which is only possible for transverse waves and not longitudinal ones like sound.