My Science School

On July 25, 1854, American inventor Walter Hunt received his patent for a paper shirt collar-"Improvement in shirt collars". This was one of Hunt's many inventions, the more popular of which are the safety pin and the sewing machine.

When you use a safety pin or see the paper collar in a shirt do you ever stop to think about how it came to be in the first place? There are many such inventions that silently go about doing their roles effectively, without pomp and fanfare. When it concerns the safety pin or the paper collar, they are probably taking a leaf out of their inventors book. For American inventor Walter Hunt spent a lifetime inventing without becoming a household name despite his successes.

Born in 1796 in the rural part of New York, very little is known about Hunt's early childhood. His obituary mentions that he was more interested in people and what he could do for them rather than his own welfare, right from childhood. It was a trait that he had throughout his life as he devoted himself to his dear ones, often giving away everything in his possession, even if that meant he didn't have enough to provide for himself.

Hunt's first patent

Hunt's family worked in a textile mill in the town of Lowville. With his ability to provide mechanical solutions to even complex problems, Hunt was able to work with Willis Hoskins, the mill owner, inventing and patenting a machine for spinning flax and hemp. This patent, which they obtained in 1826, was Hunt's first.

In 1833, Hunt invented a sewing machine that used a lockstitch - the first time an inventor had not tried to replicate a hand stitch with their machine. There's reason to believe that Hunt never patented it at the time as his daughter talked him out of commercialising the device, warning that its success would leave a lot of seamstresses unemployed.

This meant that the first patent for a lockstitch sewing machine went to American inventor Elias Howe in 1846. In the aftermath, Hunt applied a patent for his sewing machine in 1853. While the Patent Office recognised Hunt's precedence and he therefore received public credit for the invention. Howe raked in the money as his patent continued to be valid owing to certain technicalities.

Repaying a debt

Between the time he invented and patented his sewing machine, there was once a time when Hunt found himself owing a man a $15 debt. Eager to invent something that would allow him to erase the debt. Hunt is believed to have twisted an ordinary metal wire until he ended up with a device he called the "dress pin".

Even though the idea wasn't entirely novel and the concept can even be dated back to the Roman empire, Hunt was able to bring in innovations that made a lasting impact. With a clasp to keep the pin's point inside a protective case and a spring at one end that forced the other end in place. Hunt's dress pin had all the features now found today in every safety pin.

Hunt received a patent for his dress pins on April 10, 1849 and sold its rights for just $400 off his own volition. The money helped him repay his debt, even though it was only a minute fraction of the substantial fortune that his invention created.

Muslin and paper

A little over five years later, on July 24, 1854, Hunt received a patent for his paper shirt collar - "Improvement in shirt collars". He used a base of thin white cotton muslin and pasted very thin white paper on both its sides. These collars could be pressed between heated forms to make the shape of the neck. These collars were then varnished, thereby guarding it against the effects of sweat and also allowing it to be wiped clean with a damp cloth.

Until his death in 1859, Hunt continued to invent and patent devices, which included a knife sharpener, heating stove, ice boat, fountain pen, and a reversible metallic heel for shoes, to name a few. Even though he sold the rights to most of his patents, allowing others to enjoy the financial rewards that his devices brought, he was respected and recognised as someone who had spent his entire lifetime inventing.

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NASA's James Webb Space Telescope (JWST) is an infrared space observatory that launched on Dec 25, 2021, from ESA's launch site at Kourou in French Guiana, at 7:20 a.m. EST (1220 GMT; 9:20 a.m. local time in Kourou), aboard an Arianespace Ariane 5 rocket. 

NASA released the first scientific images from Webb at a live event on July, 12. Explore the first images in more detail and what it means for JWST science in our recently published article.

The $10 billion James Webb Space Telescope — NASA's largest and most powerful space science telescope — will probe the cosmos to uncover the history of the universe from the Big Bang to alien planet formation and beyond. It is one of NASA's Great Observatories, huge space instruments that include the likes of the Hubble Space Telescope to peer deep into the cosmos.

The release of the first full-colour images and spectroscopic data will mark the beginning of the next era in astronomy as Webb will help answer questions about the earliest moments of the universe and allow astronomers to study exoplanets in greater detail than ever before. James Webb was launched in December to succeed the revolutionary - but now ageing-Hubble Space Telescope. The James Webb Space Telescope uses a 19.7-foot-tall primary mirror to collect light. That light is bounced to a smaller secondary mirror, which then redirects it onto the telescope's instruments, including a camera that records an image.

While Hubble looks mostly in the visual and ultraviolet parts of the electromagnetic spectrum, Webb will look at longer wavelengths in the infrared, to see what the universe looked like around 100 to 250 million years after the Big Bang, when the first stars and galaxies were formed.

Early alignment imagery already demonstrated the unprecedented sharpness of Webb's infrared view. However, these new images will be the first in full colour and the first to showcase Webb's full science capabilities.

Credit : Space.com 

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Researchers from Weizmann Institute of Science have developed an advanced, innovative method to detect non-visual traces of fire. Using this method, they have discovered one of the earliest known pieces of evidence for the use of fire, dating back at least 8,00,000 years. Their results have been published in an article late in June in PNAS.

Ancient hominins are a group that includes humans and some of our extinct family members. The controlled use of fire by this group dates back at least a million years. Archaeologists believe that this was the time when Homo habilis began its transition to Homo erectus.

Cooking hypothesis

A working theory called the "cooking hypothesis", in fact, postulates that the use of fire was instrumental in our evolution. Controlled fire not only allowed for staying warm, crafting tools, and warning off predators, but also enabled cooking, paving the way for the growth of the brain.

Traditional archaeological evidence relying on visual identification of modifications resulting from combustion has provided widespread evidence of fire use no older than 2,00,000 years. Sparse evidence of fire dating back to 5,00,000 also exists.

The team of scientists involved in this research had pioneered the application of Al and spectroscopy in archaeology to find indications of controlled burning of stone tools. For this research, they developed a more advanced Al model capable of finding hidden patterns across a multitude of scales. Output of the model could thus estimate the temperature to which the stone tools were heated.. providing insights into past human behaviours.

Assess heat exposure

The researchers took their method to Evron Quarry, an open-air archaeological site first discovered in the 1970s. The site is home to fossils and tools dating back to between 8,00,000 and 1 million years ago, but without any visual evidence of heat. With their accurate Al, the team assessed the heat exposure of 26 flint tools. The results showed that these tools had been subjected to a wide range of temperatures, with some even being heated to over 600 degree Celsius. The presence of hidden heat puts the traces of controlled fire to at least 8,00,000 years ago.

Apart from identifying non-visual evidence of fire use, the scientists hope that their newly developed technique will provide a push toward a more scientific, data-driven archaeology that uses new tools. The researchers believe that this will help us understand the behaviour of our early ancestors and the origins of the human story.

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On May 29, 1885, self-tought inventor Jan Ernst Matzeliger conducted the first public demonstration of his shoe-lasting machine. By automating a stage of shoe production that everyone thought was impossible to do, Matezliger forever change the shoe manufacturing industry.  

Do you know what the term "lasting" means in the shoe industry? Lasting corresponds to the operation of stretching the shoe upper over the foot form or "last". There are many ways in which these lasting operations are performed and almost all shoes in today's world are lasted in some way.

For the longest time it was believed that lasting could not be automated. Even as the rest of the shoe-making process was mechanised, hand lasters held a special place in the footwear factory as they continued to pull uppers over and nail them onto the lasts. Dutch inventor Jan Ernst Matzeliger changed all that with his shoe-lasting machine.

Matzeliger was born in 1852 on a coffee plantation in Dutch Guiana-now Suriname, a small country on the northern coast of South America. Even at the young age of 10, Matzeliger demonstrated a natural aptitude for machinery as an apprentice in machine shops.

Fights language barrier

 At the age of 19. Matzeliger went to the sea, spending two years as a mechanic on a merchant ship before settling in Philadelphia, the U.S. As he spoke very little English, he had to be content doing odd jobs. including that of a shoemakers apprentice, for the next few years. When he moved to Lynn, Massachusetts, in 1877, he was looking to pursue his interest in shoe making.

Finding work in a shoe factory, Matzeliger did everything that was entrusted upon him during his 10-hour work day. He spent the evenings and nights educating himself, studying English to improve his fluency in the language and studying other subjects to enhance his mechanical abilities. He dabbled with art as well, painting pictures that he gifted to his friends and even conducting classes in oil painting.

Looks to automate lasting

Matzeliger noticed that while shoe companies had machinery for most purposes, lasting was still done by hand. While many believed that it was impossible for a machine to replicate this important step, Matzeliger took it upon himself to automate the process.

Years of experimentation followed as he tried to duplicate the movements of the hand lasters that he observed in the machine he was building. Apart from securing a working space and access to machine tools at the company he worked with, he also scraped through their junkyards and factory dumps to find usable machinery that he could alter for his requirements. By 1882, he had a working device ready.

Matzeliger filed for a patent on January 24, 1882. The text and drawings of his 15-page document, however, were so complex that an inspector had to visit him to understand the workings of his machine.

Better than the best

Matzeliger received a patent for his lasting machine on March 20, 1883. This machine employed pincers to hold an upper, pulled it over the last and held it in place, before pinning the leather to the last and discharging the completed shoe. Matzeligers machine could easily outdo even the best of hand lasters, who managed 60 pairs of shoes a day.

In the next couple of years. Matzeliger further tweaked this device with engineering improvements to make it industry-ready. When he was finally satisfied, he held a public demonstration on May 29, 1885. The machine reproduced the technique used by hand lasters. but at a much greater speed-it was capable of producing as many as 700 pairs of shoes each day.

Along with two investors who provided capital in exchange for two-thirds ownership of the device, Matzeliger formed a company to market his machine. With the demand for the lasting machine increasing rapidly, the organisation grew fast and soon merged with many other shoe manufacturers to form the United Shoe Machinery Company.

Matzeliger, however, didn't enjoy the financial windfall that followed as he died from tuberculosis in 1889 at the young age of 36. Despite the prejudices that he suffered, both because of his colour and the fact that he lacked formal education, Matzeliger not only revolutionised footwear production, but also made high-quality shoes affordable for everyone. We don't have to look beyond the shoes we wear each day to see the lasting impact that one young man who was tirelessly driven by an idea has had.

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The Wright brothers need no introduction. Best known for achieving the first powered heavier-than-air craft flight, the Wright brothers obtained the patent for a "Flying Machine" on May 22, 1906.

The names of Wilbur Wright and Orville Wright will forever be intertwined with the history of flying machines. For, the Wright brothers were the first to achieve the flight of a powered heavier-than-air craft.

 The elder of the two, Wilbur, was born in 1867 and was the third child in the Wright family. Orville was the sixth of seven children that his parents had. The seeds for an idea about flying were sown when Wilbur and Orville were still two young boys.

A toy that inspires

Their mother gave them a toy helicopter to play with. This little piece of wood that had two rubber bands to turn a propeller laid the foundation for a lifetime's work.

Drawn towards flying, the Wright brothers spent plenty of time observing birds in flight. This allowed them to notice that lift was created when birds soared into the wind and the air flowed over the curved surface of their wings. They use this knowledge to build kites, which they even sold to their friends.

Cycling to aviation

As avid cyclists, Wilbur and Orville owned a bicycle shop as adults. Despite the fact that they had less than 10 years of combined high school education, the experience of building bicycles provided them the understanding of early engine design - be it using chains, sprockets, or ball bearings.

Years of riding a bicycle gave them ideas as to how they could control and balance an aircraft. Add to this the countless hours that they had spent observing flight in nature and they had the necessary knowledge and interest to get started.

By 1899, the Wright brothers ventured into flying. Between 1900 and 1902, they researched every aspect of flight, from roll, pitch, and yaw to the rudder, elevator, and performance of the wing. In order to test the aerodynamic qualities of wing models, they even developed the first wind tunnel. The brothers also worked on their own piloting skills by making over a thousand flights on a series of gliders at Kitty Hawk, North Carolina.

Master a control system

Their years of trial and error allowed them to master their glider in all three axes of flight: pitch, roll, and yaw. While the pitch was operated by a forward elevator, their breakthrough discovery included the simultaneous use of roll control with wing-warping and yaw control with a rear rudder.

Even though they had just started conducting experiments with propellers and begun to build their own engines, they applied for a patent in March 1903 for their control system. They were granted U.S. Patent 821,393 for a "Flying Machine" on May 22, 1906. This patent is significant as it laid down a useful and modern means of controlling a flying machine, regardless of whether it was powered or not.

Not ones to be kept waiting, the Wright brothers had already made the first free, controlled, and sustained flights in a powered, heavier-than-air craft on a chilly day at Kitty Hawk, on December 17, 1903. With just a handful of others witnessing history, Orville stayed 12 seconds in the air and flew 120 feet in the first trial at 10.35 a.m. In the fourth and final trial of the day, Wilbur achieved the longest flight of 59 seconds in the air and reached a height of 852 feet. In a little over 100 years since then, human beings have flown farther and faster than ever before, and continue to progressively get better at it.

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On May 9, 1893 the first public demonstration of the kinetoscope was held at the Brooklyn Institute of Arts and Sciences. Featuring three workers pretending to be blacksmiths, the film was among the first glimpses into motion pictures.

With the vacation upon us already and the pandemic scene relenting a bit, one of the activities that most families tend to do over the weekend is visiting a theatre to watch a new movie. Even though motion pictures are a multi-billion-dollar industry in the world today, they have been around only since late in the 19th Century. By the end of that century. the concept of moving images as entertainment was picking up. Magic lanterns had been around for generations and these devices employed glass slides with images that were then projected. We had looked at how pioneering photographer Eadweard Muybridge invented the zoopraxiscope in this column about two months back. Muybridge's zoopraxiscope projected a series of images, which were printed on a rotating glass disc, in successive phases of movement.

Muybridge meets Edison

It isn't clear as to when American inventor and businessman Thomas Alva Edison's interest in motion pictures began. Even though some argue that he was already interested for years, it is obvious that Muybridge's visit to Edison's laboratory in West Orange in February 1888 convinced the latter to invent a motion picture camera.

Muybridge suggested that they collaborate and work together to combine the zoopraxiscope with Edison's  phonograph - a device for the recording and reproduction of sound. While Edison was clearly intrigued by the idea, he decided against the partnership, maybe because he could see that the zoopraxiscope wasn't the best way of recording motion.

Calls it kinetoscope

Always an entrepreneur, Edison decided to protect his future inventions by filing a caveat with the Patents Office in October 1888. He described his ideas for a machine that would record and reproduce objects in motion, calling it a device that would "do for the eye what the phonograph does for the ear". He named this yet to be invented device as a kinetoscope, by combining the Greek words for "movement" and "to watch"  kineto and scopos.

Much of the credit for the design of the kinetoscope actually goes to Edison's assistant, William Kennedy Laurie Dickson, an accomplished photographer. Tasked with inventing Edison's kinetoscope in June 1889, Dickson, assisted by Charles A. Brown, carried out a lot of experimentation to turn the concept into reality.

Celluloid film to the rescue

After the initial attempts proved futile, Edison's team changed direction to that of others in the field. Edison had encountered French physiologist Etienne-Jules Marey, who had produced a sequence of images by utilising a continuous roll of film in his chronophotographie, in Europe and this put them onto their new track

By now, the inventive process was being delayed by the lack of film rolls of requisite length and durability. Edison's experiments started using emulsion-coated celluloid film sheets that were developed by photographic pioneer John Carbutt. When the Eastman. Company started producing its own celluloid film, Dickson and his new assistant William Heise got it in large quantities and set about working on their machine.

Means of seeing motion pictures

Dickson had the prototype ready by 1891 and the device doubled up both as a camera and a peep-hole viewer. On August 24, 1891 they applied for a patent for the kinetograph (the camera) and the kinetoscope (the viewer) and the device was completed by 1892.

Consisting of an upright wooden cabinet that was four feet high, the viewer had to look into a peep-hole at the top of the cabinet to see the motion picture. The first public demonstration of Edison's films featured three of his workers pretending to be blacksmiths and was held at the Brooklyn Institute of Arts and Sciences on May 9, 1893. By 1894. hundreds of people often lined up in parlours housing these devices to pay 25 cents (over $7 in today's money) and watch five reels.

In the years that followed, Dickson left Edison to be a part of the group that formed the American Mutoscope and Biograph Company: Edison sued that company in 1898 for infringing on his patent for the kinetograph; and the two companies started working together from 1909 until Edison's company left the film industry in 1918. By then, Dickson, Edison, and the kinetoscope had more than just provided a glimpse of a new form of media - the motion pictures.

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Peter Higgs is a British physicist who proposed the existence of the Higgs boson, a subatomic particle, which was confirmed through the discovery at CERN, a European Organization for Nuclear Research, in 2012. He and Belgian physicist François Englert were awarded the 2013 Nobel Prize in Physics "for the theoretical discovery of a mechanism that contributes to our understanding of the origin of mass of subatomic particles." The Higgs boson is the fundamental particle associated with the Higgs field, a field that gives mass to other fundamental particles such as electrons and quarks.Higgs was born in England in 1929. He was taught at home as a child. Later, he attended Cotham Grammar School in Bristol and was inspired by the work of the school alumnus Paul Dirac founder of the field of quantum mechanics. Peter Higgs graduated in Physics from King's College London in 1950 and achieved a master's degree in 1952. He was awarded a Research Fellowship from the Royal Commission for the Exhibition of 1951 and performed his doctoral research in molecular physics under the supervision of Charles Coulson and Christopher Longuet-Higgins. He received his PhD degree in 1954 and became a lecturer in mathematical  physics at Edinburgh in 1960 and remained there till his retirement in 1996.

In 1956, Higgs began working in quantum field theory. In 1964, he proposed the theoretical existence of the Higgs Boson. Higgs developed the idea that particles - massless when the universe began - acquired mass a fraction of a second later as a result interacting with a theoretical field (which became known as the Higgs field). Higgs postulated that this field permeates space, giving mass to all elementary subatomic particles that interact with it. Independently of one another, both Peter Higgs and the team of François Englert and Robert Brout proposed this mechanism. In 1964, Physical Review Letters, published Higg's paper which predicted a new massive spin-zero boson (now known as the Higgs boson). In 2012, two experiments conducted at the CERN laboratory in Geneva confirmed the existence of the Higgs particle. Definitive confirmation that the particle was the Higgs boson was announced in March 2013.

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Launched on April 17, 1967, Surveyor 3 was the third engineering flight of the Surveyor series and the second in the series to achieve a soft landing on the moon. It was based on Surveyor 3's surface sampling tests that it was concluded that the lunar surface could hold the weight of an Apollo lunar module

The Apollo 11 mission will remain in the collective consciousness of human beings forever. This is because it was the first time we humans managed to set foot on our natural satellite, the moon.

It is important to remember that this was made possible due to a number of missions that preceded this one. Among these was the Surveyor 3 spacecraft which proved beyond doubt that an Apollo lunar module could indeed safely land on the moon's surface.

The third engineering flight of the Surveyor series, this spacecraft was the first to carry a surface-sampling instrument that could reach up to 1.5 m from the lander and dig up to 18 cm. Unlike its predecessors, Surveyor 3 began its mission from a parking orbit around Earth on April 17, 1967.

Bouncing to a stop

While it became the second in the series after Surveyor 1 to achieve a soft landing on the moon three days later on April 20, it was far from smooth. As highly reflective rocks confused the landers descent radar, the main engine did not cut off at the correct moment during the descent to the lunar surface.

This meant that Surveyor 3 bounced off the moon, not once but twice-first to a height of 10 m and then again to a height of 3 m. It was third time lucky for Surveyor 3 as it landed softly in the southeastern region of Oceanus  Procellarum.

With its worst behind it. Surveyor 3 set out to do what it was sent to do. Within an hour after landing, the spacecraft began transmitting the first of over 6,000 TV pictures of the surrounding areas.

Similar to wet sand

The most important phase of the mission included deployment of the surface sampler for digging trenches, manipulating lunar material, and making bearing tests. Based on commands from Earth, the probe was able to dig four trenches, performing four bearing tests and 13 impact tests.

The results from these experiments were the most important aspect of this mission. The scientists were able to conclude that lunar soil's consistency was similar to that of wet sand and that it would be solid enough to bear an Apollo lunar module when it landed.

The start of May saw the first lunar nightfall following the arrival of Surveyor 3. The spacecraft's solar panels stopped producing electricity and its last contact with Earth was on May 4. While Surveyor 1 could be reactivated twice after lunar nights, Surveyor 3 could not be reactivated when it was attempted 336 hours later during the next lunar dawn.

Tryst with Apollo 12

 That, however, wasn't the last of what we heard about Surveyor 3. Four months after the huge success of Apollo 11, NASA launched Apollo 12 in November 1969. The lunar module of Apollo 12 showcased pinpoint landing capacity as the precise lunar touchdown allowed the astronauts to land within walking distance of the Surveyor 3 spacecraft. During their second extra vehicular activity on November 19, astronauts Charles Conrad, Jr. and Alan L. Bean walked over to the inactive Surveyor 3 lander and recovered parts, including the camera system and the soil scoop.

Just like moon rocks, these were returned to Earth for studying, as they offered scientists a unique chance to analyse equipment that had been subjected to long-term exposure on the moon's surface. The studies of the parts showed that while Surveyor 3 had changed colour due to lunar dust adhesion and exposure to the sun, the TV camera and other hardware showed no signs of failure.

While NASA placed some of the Surveyor 3 parts into storage along with moon rocks and soil samples, the remaining parts found home elsewhere. Even though NASA treats them as lunar samples and not artefacts, they are greatly valued when gifted or loaned out, both to museums and individuals.

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Nike co-founder Bill Bowerman, a track and field coach, decided to make a running shoe that was lighter and had a stronger grip on various surfaces. Nike's first pair of running shoes was inspired by waffles.Bill Bowerman was having breakfast with his wife one morning in 1971 when it dawned on him that the grooves in the waffle iron she was using would be an excellent mold for a running shoe. Nike's first shoe, created in 1972, had a sole made using a waffle iron. The company's founder, Bill Bowerman used his wife's waffle iron to make grooves on the sole to provide a better grip while running.

Bowerman was the mad scientist of the group, experimenting with new shoe designs and rubber formulations to produce a better running shoe. In one landmark experiment, he squeezed rubber in his wife's waffle iron, producing the waffle sole. Nike made 12 of the shoes for runners in the 1972 Olympic trials, and the design went on to help Nike become a global sneaker powerhouse.

Credit : Business Insider 

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