Inventions

The first projection screen was invented in the late 19th century, with the development of early projectors that used translucent materials such as fabric or paper for projection. These early screens were typically white and could be easily rolled up for portability.

The compass improved navigation at sea by providing a reliable method to determine direction, allowing sailors to venture farther from land. The astrolabe, on the other hand, aided in celestial navigation by determining latitude based on the position of the stars, enabling sailors to accurately map their location. These advancements facilitated European exploration and expansion by making it easier to navigate unknown waters and reach distant lands.

The earliest known globe was constructed by the scholar Crates of Mallus in Cilicia (now Çukurova in modern-day Turkey) around 150 BC. An ancient celestial globe that still exists was made about 150 AD as part of a sculpture, called the Farnese Atlas, in the Naples Museum, Naples, Italy.[1] The first globe of the Old World was constructed in the Muslim world during the Middle Ages.[2] The oldest existing terrestrial globe was made by Martin Behaim in Nürnberg, Germany, in 1474.[1] A facsimile globe showing America was made by Martin Waldseemueller in 1507. Another early globe, the Hunt-Lenox Globe, ca. 1507, is thought to be the source of the phrase "Here be dragons."

The pin of a sundial where the shadow falls is called the gnomon. It is typically a thin, straight rod that extends vertically from the sundial's base. The shadow cast by the gnomon is used to indicate the time of day on the sundial's face.

Glasses (also called eyeglasses or spectacles) are frames bearing lenses worn in front of the eyes, normally for vision correction, eye protection, or for protection from UV rays. The earliest historical reference to magnification dates back to ancient Egyptian hieroglyphs in the 5th century BC, which depict "simple glass meniscal lenses". The earliest written record of magnification dates back to the 1st century AD, when Seneca the Younger, a tutor of Emperor Nero, wrote: "Letters, however small and indistinct, are seen enlarged and more clearly through a globe or glass filled with water". Emperor Nero is also said to have watched the gladiatorial games using an emerald as a corrective lens.

Robert Grosseteste's treatise De iride ("On the Rainbow"), written no later than 1235, mentions using optics to "read the smallest letters at incredible distances". A few years later, Roger Bacon is also known to have made one of the first recorded references to the magnifying properties of lenses in 1262.

Sunglasses, in the form of flat panes of smoky quartz, protected the eyes from glare and were used in China in the 12th century or possibly earlier. However, they did not offer any corrective benefits.

The hypsometer was invented by Horace de Saussure, a Swiss physicist, in the late 18th century. He designed this instrument to measure the heights of mountains by using principles of trigonometry and barometric pressure.

The main difference of the Chinese compass with the existing compass today is that the former makes use of ferrites or magnetic oxides. These are natural minerals that attract iron and other metals. Large deposits of ferrites were discovered thousands of years ago in the district of Magnesia in Asia Minor.

The second difference is that the Chinese compass is always pointing on the south while the invented compass points to the north.

The third is that invented compass is basically used for navigational purposes whereas the Chinese compass is used as a navigational tool and also as a beautiful piece of home décor and for Feng Shui.

The monocle was first invented around the 1700's in Germany. It was brought to England in about 1800 to be introduced.

Dr. Pedro Escuro is a fictional character and does not have any actual contributions to science. He is a character from the television show "The Big Bang Theory" where he is portrayed as a scientist who plays a minor role in some episodes.

Sir Issac Newton

it was actually a CAT door-more a flap than a door

Sundials rely on sunlight to function, so they are not accurate on cloudy days or at night. They may also require frequent adjustment due to the Earth's changing position relative to the sun throughout the year. Additionally, inaccuracies can arise from variations in the sundial's orientation or location.

If the angles of the mirrors that you used on periscope are not parallel to each other you would see the image upside down.

When you hold a spiral paper over a lit candle, the heat causes the air within the spiral to rise, creating a mini updraft that makes the spiral rotate. The rotation is caused by the temperature difference between the inside and outside of the spiral paper.

the shadow of the sundial is just called a shadow

The Red Arrows were formed in 1965 by Royal Air Force pilots who flew in the Central Flying School aerobatic team. They were inspired by a French aerobatic display team called "Les Diables Rouges," which translated to "The Red Devils."

A system made of 25 satellites is typically referred to as a "constellation." Each satellite plays a specific role within the constellation to accomplish overall objectives such as global positioning, communication, or Earth observation.

They were invented around 2000 years ago. They were made of wood.

Eduardo San Juan did not invent the lunar rover. The lunar rover was developed by Boeing and General Motors for NASA's Apollo program in the 1970s.

Roberto del Rosario is known for inventing the Karaoke Sing-along System in 1975. His invention revolutionized the entertainment industry by allowing people to sing along to instrumental tracks of popular songs. Del Rosario's innovation has had a lasting impact on the way people enjoy music worldwide.

Antonie van Leeuwenhoek did not invent the telescope. He is known for being one of the first microscopists, known for his work in developing and improving the microscope to observe microorganisms and cells. Galileo Galilei and Hans Lippershey are credited with the invention of the telescope.

The Tower of the Winds sundial works by using the position of the Sun to cast a shadow on markers inside the tower, indicating the time of day. The tower has sundials on each of its eight sides, allowing it to monitor time throughout the day. This mechanism harnesses the movement of the Sun across the sky to track time accurately.

The praxinoscope was invented by French inventor and optical toy maker, Charles-Émile Reynaud in 1877. It improved upon the earlier zoetrope by using mirrors to create a smoother and brighter animation effect.

Edward Craven Walker and his business partner, David George Smith, are credited with inventing the lava lamp in 1963. They developed the lamp based on an idea from a design seen in a pub in Dorset, England.

Two other types of sundials are the equatorial sundial and the vertical sundial. The equatorial sundial has a dial plate that is parallel to the equatorial plane, allowing it to be accurate at all latitudes. The vertical sundial has a dial plate that is perpendicular to the ground and faces south, making it suitable for mounting on vertical surfaces like walls.