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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

Why do a fountain pen starts leaking at higher altitudes?

A fountain pen might leak at higher altitudes due to changes in air pressure. As the altitude increases, the air pressure decreases, causing the ink inside the pen to flow more easily or even leak out. This can result in messy ink spills.

Why does a fountain pen starts leaking at higher altitudes?

A fountain pen may leak at higher altitudes due to changes in air pressure affecting the ink flow within the pen. The lower air pressure can cause the ink to expand and contract more, leading to potential leaks through the nib or cartridge. It is advisable to store fountain pens in a horizontal position or with the nib pointing upward to minimize the risk of leaking.

What are the discoveries of DR Hilario Lara?

Dr. Hilario Lara is best noted for his work in Healthcare and Disease prevention by having played a key role in the establishment of the National Research Council of the Philippines as well as the Philippines Institute of Public health. In addition, he spent many years in medical research in areas such as typhoid fever; dysentery; measles and diphtheria which led to the control of these diseases in the Philippines He also set medical standards for (i) the prevention as well as control of disease; (ii) promotion and conservation of health as well as (iii) environmental sanitation.

Why were umbrellas invented?

Umbrellas, or parasols, were invented to block rain or sunlight. They dated back to thousands of years ago. They were used in multiple countries- yet were commonly used to shade the King or ruler from rain or sunlight. Nowadays, in rainy or even sunny climates, all people have umbrellas in case of a rainy (or sunny?) day.

What is the projecting piece of the sundial called which shows the time by its shadow?

The projecting piece of the sundial that shows the time by its shadow is called a gnomon. It is typically a thin rod or plate that extends from the dial's face and casts a shadow onto the dial's surface to indicate the time.

What are different parts of a sundial?

A sundial typically consists of a flat plate called the dial face, a rod called the style that casts a shadow on the dial, and markings on the dial to indicate the time as the shadow moves. Some sundials may also have a base or pedestal for stability and orientation.

When were zoos invented?

Zoos have been around for thousands of years, with the first known zoo established in ancient Egypt around 3500 BCE. These early zoos were used to display exotic animals to show power and wealth. Modern zoos as we know them today began to evolve in the 18th century, focusing more on education, conservation, and animal welfare.

Her biographer conclusively proves that Hypatia did invent the astrolabe?

There is no conclusive proof that Hypatia invented the astrolabe. It is believed that she made significant contributions to mathematics and astronomy, but the exact origins of the astrolabe are unclear as it existed before her time.

Why has the manufacture of sundials continued after the invention of clocks?

Sundials are valued for their aesthetic appeal, historical significance, and symbolic representation, making them popular for decorative purposes. They also serve as educational tools and can be used to teach about the passage of time and the movement of the sun in relation to the Earth. Additionally, sundials can be used in places where other timekeeping devices may not be practical or available.

Who invented confetti?

Confetti was actually first used in Paris in 1891. Someone was taking down the decorations after a party at a really big theatrical revue called "le Casino de Paris" They decided to cut up the decorations and drop them on the guests the next evening. No one had seen Confetti before and were enthralled to the point of giddiness. Within 4 Years Confetti was being made by machine and being sold all over the world.

Why does izzy go by the name kaleidoscope?

Izzy goes by the name Kaleidoscope as a way to express their colorful and ever-changing personality. The name reflects the idea of constantly shifting perspectives and a wide range of emotions and experiences that Izzy embodies. It is a creative and dynamic way for them to present themselves to the world.

Who invented the medical thermometer?

The medical thermometer was invented by Sir Thomas Allbutt in 1866. He designed the first practical and accurate clinical thermometer, which revolutionized temperature measurement in medicine.

Why do eyeglasses get foggy indoors?

Eyeglasses get foggy indoors when warm air meets the cooler surface of the glasses, causing condensation to form. This happens because the surface of the glasses is cooler than the warm air in the room, leading to moisture in the air condensing on the glasses and creating the foggy effect.

Who invented a laser pointer?

The laser pointer was invented by Theodore H. Maiman in 1960. Maiman was an American physicist who developed the first working laser technology using a ruby crystal.

Where did evangelista torricelli live?

Evangelista Torricelli was born and lived in Italy. He was born in Faenza, Italy in 1608 and later worked and conducted his scientific experiments in Florence. Torricelli is best known for inventing the barometer and for his contributions to the field of physics.

Who created the magnifying glass?

Roger Bacon, an Englishman and a lecturer at the University of Oxford born in the early 1200s, most often receives credit for the first known use and descriptions of a magnifying glass or lens.

When did he invent the eyeglasses?

The invention of the eyeglasses is credited to an unknown Italian inventor in the late 13th century. The specific date is uncertain, but it is believed to have been around the year 1286.

Who is credited with inventing the first Gregorian refracting telescope?

The Gregorian refracting telescope was invented by Scottish mathematician and astronomer James Gregory in the 17th century. He designed this telescope to address some of the optical issues of the existing telescopes at that time.

Where did the idea of photocopying your butt come from?

The practice of photocopying your butt as a joke is believed to have originated in the 1980s as a fun and playful act among office workers. It is likely a spontaneous and humorous way to break the monotony of office work and create a light-hearted moment with colleagues.

What inventions resulted from space exploration?

Some inventions that resulted from space exploration include memory foam, scratch-resistant lenses, and water purification systems. These technologies were initially developed for use in space missions but have since been adapted for various other applications on Earth.

Where was the first sundial made and used?

The first sundial is believed to have been made and used in Ancient Egypt around 1500 BC. Sundials were used to measure time by tracking the movement of the sun's shadow throughout the day.

Who was the French inventor who made the first flight in a hydrogen balloon in 1783?

Jacques Charles (1746-1823), along with the brothers Anne-Jean Robert (1758-1820), and Marie-Noël Robert (1760-1820), launched the first unmanned hydrogen balloon in August, 1783. On December 1, Charles and the younger Robert made the first manned hydrogen balloon flight over Paris, covering some 36 kilometers (22 miles).

Who invented hawk eye?

Hawk-Eye technology was invented by Dr. Paul Hawkins in 2001. It is a complex computer system used in sports to visually track the trajectory of the ball and make accurate calls in real time.

What invevtion was made by david bushnell?

David Bushnell invented the first military submarine called the Turtle in 1776 during the American Revolution. The Turtle was a one-man submersible vessel designed to attach explosive devices to British warships. Although it was not particularly successful in its mission, it represented an important advancement in submarine technology.

Who invent the first stop light?

JP Knight invented the traffic light in 1868