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Inventions
Find questions about how different mechanisms originated and the people who came up with the ideas and put them into reality.
42,133 Questions
When were street lights invented?
[edited after some idiot wrote the wrong answer]
The Greeks and Romans first used lanterns in the street, which burnt oil.
However, the first electric street lamps were invented by the Russian, Pavel Yablochkov in 1875. It was powered by an alternating current source, just the same as today's high pressure sodium bulbs use.
The peak of technology today uses LEDs which give off a white light, rather than the orange glow of the Sodium lamps. These LED lamps run on DC power.
The star was not invented by anyone. Stars are natural celestial bodies that form in space as a result of gravity acting on clouds of gas and dust, leading to nuclear fusion reactions that create light and heat.
Why was the beaufort scale invented?
The Beaufort scale was invented to measure and describe the wind force and its effects on land and sea. It was developed in 1805 by British Royal Navy officer Sir Francis Beaufort to help sailors estimate wind speeds and adjust their sails accordingly while at sea.
What are the advantages of sundials?
Sundials are simple, reliable, and require no external power source. They can also act as decorative garden features.
When was a bottle rocket invented?
Bottle rockets were invented in ancient China during the Tang Dynasty (618-907 AD). The Chinese used them for celebrations and religious ceremonies.
American physicists Charles Hard Townes and Arthur Leonard Schawlow were granted a patent for the first laser in 1958.
The octant was invented by British mathematician and astronomer John Hadley in 1730. Hadley's octant was a navigation instrument used to measure the altitude of celestial bodies, helping sailors to determine their position at sea.
The planets that were known before the telescope was invented were?
Mercury, Venus, (Earth), Mars, Jupiter, Saturn
What is the name of the upright arm of a sundial?
The upright arm of a sundial is called a gnomon. It is the part that casts a shadow on the sundial face to indicate the time.
The first commercial laser disc was made by the Philips company
Where is the Johnson Space Center located?
The Johnson Space Center is located in Houston, Texas, United States. It serves as the mission control center for all manned space missions, including those of NASA's Space Shuttle program and the International Space Station.
Why did george claude invent the neon light?
George Claude invented the neon light to commercialize the bright and colorful light produced when electric current passes through neon gas. He saw the potential for using neon lights in advertising, signage, and decoration due to their eye-catching appearance and long lifespan. Claude's invention revolutionized the lighting industry and has since become a popular choice for creating vibrant and visually appealing displays.
Kepler discovered that planets move faster when they?
Kepler discovered that planets move faster when they are closer to the sun in their elliptical orbits. This relationship is described by Kepler's second law of planetary motion, which states that a planet sweeps out equal areas in equal times as it orbits the sun.
How do you start a fire with a magnifying glass?
well you have to get good tinder like newspaper or old branches and then pick up your magnifying lens and hold it up to the tinder. Try to get the light as small as possible. Tip/if you try to do it at dusk it wont work noon or in the afternoon is the best time.
What was Anders Celsius famous for?
Anders Celsius was famous for developing the Celsius temperature scale, which is now widely used as the standard measurement system for temperature in most countries around the world. He created the scale in 1742, with 0 degrees as the freezing point of water and 100 degrees as the boiling point of water at sea level.
How old was Edwin binney when he died?
Edwin Binney was 77 years old when he died on December 17, 1934.
What instrument that uses light and two or more lenses is used to view cells?
A microscope is the instrument that uses light and two or more lenses to view cells. The lenses in a microscope help to magnify and focus the light on the sample, allowing us to see the fine details of the cell structure.
What year were candles invented?
Candles have been used since ancient times, with the earliest known candles dating back to around 3000 BC in ancient Egypt. These early candles were made from natural materials like tallow or beeswax.
Describe the compound microscope developed by Zaccharias and Hans Janssen?
Zaccharias and Hans Janssen developed the compound microscope in the late 16th century. This microscope used multiple lenses to magnify objects, allowing for greater magnification and clarity compared to simple microscopes. Their design laid the foundation for modern microscopes used in scientific research and medical applications.
Did Ben Franklin invent bifocals?
Yes, Ben Franklin did not invent bifocals but he is credited with popularizing them. He created a pair of glasses with two different lens powers, allowing for both distance and close-up vision.
What was Galileo's most famous inventions?
Galileo developed the thermoscope to measure hot and cold during the Paduan period. Galileo would use a glass bottle about the size of an egg, with a long glass neck. He then heated the bottle with his hands and then immersed it partially in a vessel full of liquid. When he removed his hands, the liquid rose to a certain height in the neck, remaining above the liquid in the vessel.
