Science and Technology Inventions & Discoveries

Apple Corporation (specifically the Apple Lisa and later Macintosh) popularized the mouse for personal computing, though the original concept was developed at Xerox PARC. Apple's commercialization made the mouse a mainstream input device.

Ernest Rutherford discovered the proton in 1917 through experiments with nitrogen gas and alpha particles. The proton is a positively charged subatomic particle found in the nucleus of all atoms.

Sunlight takes approximately 8 minutes and 20 seconds (about 500 seconds) to travel from the Sun to Earth, due to the average Earth-Sun distance of about 150 million kilometers and the speed of light.

Larry Ellison co-founded Oracle Corporation (originally called Software Development Laboratories) in 1977 along with Bob Miner and Ed Oates. Ellison served as CEO until 2014 and is known for his business acumen in the database software industry.

Sulphuric acid (H2SO4) is called the 'King of chemicals' because of its enormous industrial importance - it's used in fertilizer production, petroleum refining, chemical manufacturing, and more. It's the most-produced industrial chemical worldwide by volume.

A rhino's horn is composed entirely of keratin, the same structural protein that makes up human hair, fingernails, and animal hooves. The horn is not made of bone, teeth, or muscle tissue.

Louis Pasteur conducted groundbreaking experiments in the 1860s that proved microbes exist in air and can cause fermentation and spoilage. His swan-neck flask experiment disproved spontaneous generation and established germ theory.

Sunlight takes approximately 8 minutes and 20 seconds (about 500 seconds) to travel from the Sun to Earth, due to the average Earth-Sun distance of about 150 million kilometers and the speed of light.

Larry Ellison co-founded Oracle Corporation (originally called Software Development Laboratories) in 1977 along with Bob Miner and Ed Oates. Ellison served as CEO until 2014 and is known for his business acumen in the database software industry.

Sulphuric acid (H2SO4) is called the 'King of chemicals' because of its enormous industrial importance - it's used in fertilizer production, petroleum refining, chemical manufacturing, and more. It's the most-produced industrial chemical worldwide by volume.

Rhino horns are composed of keratin fibers, the same structural protein that makes up human hair and fingernails. They are not made of bone, teeth, or muscle tissue, which is why rhino horns can grow back if cut.

Louis Pasteur's famous swan-neck flask experiments in the 1860s demonstrated that microorganisms exist in air and can cause contamination. His work disproved spontaneous generation theory and established germ theory.

Ada Lovelace wrote the first algorithm intended for Charles Babbage's Analytical Engine in the 1840s, making her the first computer programmer in history. Babbage designed the hardware but Lovelace wrote the software.

Dry ice is solid carbon dioxide (CO2) that sublimates directly from solid to gas at -78.5°C. It's called 'dry' because it doesn't melt into a liquid like regular ice does. The correct option has a typo.

While Xerox PARC invented the mouse concept in the 1970s, Apple was the first to commercially introduce it to the mass market with the Apple Lisa in 1983 and the Macintosh in 1984. This question likely refers to commercial introduction.

Ernest Rutherford discovered the proton in 1917-1919 through experiments showing that nitrogen could be converted into oxygen by alpha particle bombardment, identifying hydrogen nuclei as a fundamental particle. Option B misspelled.

Samuel F.B. Morse invented the telegraph and developed the Morse code system in the 1830s-1840s for transmitting messages electronically. Morse code uses combinations of dots and dashes to represent letters, numbers, and punctuation. It became crucial for long-distance communication, especially for maritime and telegraph communications. Richard Morse was Samuel's son who helped improve the system.

Alexander Graham Bell patented the first practical telephone in 1876. While others like Elisha Gray worked on similar technology, Bell's patent and successful demonstration earned him recognition as the inventor.