https://padlet.com/kalarani_vellas/p5rkjncaa9fh Made with serendipity en-us 2018-01-15 01:21:54 UTC 2023-05-26 21:38:12 UTC hello@padlet.com https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320337 2018-01-15 01:28:20 UTC https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320337 https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320342 Constantin Fahlberg, a German scientist, was working on finding a profitable by-product from the production of coal. Being engrossed with the project, he forgot to have his supper one night, so he rushed to take his meal without washing his hands. To his surprise, the bread that he ate tasted sweet! Upon discovering this, he rushed back to his lab and tasted almost all of the contents in the beakers and flasks, subsequently discovering saccharin. ]]> 2018-01-15 01:28:23 UTC https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320342 https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320377 In 1827, English pharmacist John Walker was stirring a pot of chemicals that included antimony sulfide and potassium chlorate, and then he noticed this dried lump at the end of his mixing stick. Now, he tried to scratch it off, but it burst into flames and the world had it's first prototype of the match. 
Ching]]> 2018-01-15 01:28:39 UTC https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320377 https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320387  In 1895, German physicist Wilhelm Roentgen was performing a routine experiment involving cathode rays, when he noticed that a piece of fluorescent cardboard was lighting up from across the room. A thick screen had been placed between his cathode emitter and the radiated cardboard, proving that particles of light were passing through solid objects.]]> 2018-01-15 01:28:46 UTC https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320387 mohamedhafiz99 https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320392 Dynamite was discovered by Alfred Noble in 1833. Back then, a chemical substance known as Nitroglycerine was produced as explosive. However, it was unstable. One day, Alfred Noble was experimenting with Nitroglycerine, it fell, surprisingly it didn’t explode and Alfred owed his life to sawdust. It soaked the substance. From that day forth, Alfred Noble was known as “Dynamite Noble”. ]]> 2018-01-15 01:28:50 UTC https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320392 https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320397 2018-01-15 01:28:53 UTC https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320397 https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320424 In 1950's, a scientist who goes by the name of Wilson Greatbatch was working with oscillators to track heart sounds but upon installing the wrong resistor, the device gave off rhythmic beats and presto he found a way to regulate human hearts.]]> 2018-01-15 01:29:07 UTC https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320424 https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320436 Play-Doh is a modelling compound like the plasticine and modelling clay. It was in 1930s when Noah McVicker, who owned a soap company, decided to create a substance to be used as wallpaper cleaner.
 
 The product worked really well. Eventually, some elementary school teachers learned that it can be used to make school art and craft projects.
 
 Noah McVicker and his nephew thought it would be a good idea to market it as modelling compound and they renamed the substance into Play-Doh © .

]]> 2018-01-15 01:29:17 UTC https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320436 https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320439 2018-01-15 01:29:18 UTC https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320439 https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320441 In 1945, Percy Spencer, an American self-taught engineer, was working in a lab testing magnetrons, the high-powered vacuum tubes inside radars. One day while working near the magnetrons that produced microwaves, Spencer noticed a peanut butter candy bar in his pocket had begun to melt - shortly after, the microwave oven was born.]]> 2018-01-15 01:29:20 UTC https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320441 https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320539 Richard James, a navy engineer was trying to develop a spring for ships. The spring fell off his shelf and continued moving so he got the idea of making it as a toy]]> 2018-01-15 01:30:24 UTC https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320539 https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320626 Michael Chieng Sun
Robert Augustus Chesebrough, a 22 year-old British chemist, travelled to Titusville, a small Pennsylvania town where petroleum had recently been discovered. Chesebrough, who had been making kerosene from the oil of sperm whales, was eager to learn what other products could be made from petroleum. Shortly after arriving in Titusville he became intrigued by a naturally-occurring byproduct of the oil drilling process that seemed to have remarkable skin-healing properties. While watching the oilmen, Chesebrough took note of how they would smear their skin with the residue from the drill to help heal their cuts and burns. Inspired, Chesebrough began his quest to help heal America’s dry skin.]]> 2018-01-15 01:31:20 UTC https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221320626 chong_minwi https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221321395 Min Wi ]]> 2018-01-15 01:40:15 UTC https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221321395 https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221321739 Ng Zheng Yao (Augustus)
Teflon is often used as a non stick coating for cookware such as pans and muffin tin. Teflon is discovered accidentally by Roy J.Plunket when he was researching for new chlorofluorocarbon refrigerants. He produced a hundred pounds of tetrafluoroethylene gas (TFE) and stored it in small cylinders at dry-ice temperatures. Surprisingly the gas has turned into white powder in the cylinder. He realized that the white powder is chemically inert, heat resistant and have low surface friction.

]]> 2018-01-15 01:43:26 UTC https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221321739 chanshelin https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221466845 The Safety Glass, which prevents our windshield from shattering into a million lethal pieces if you're ever in a car accident, is accidentally discovered by French chemist Edouard Benedictus in the early 20th century. He dropped a glass flask, coated with plastic cellulose nitrate and it didn't shatter. ]]> 2018-01-15 15:12:58 UTC https://padlet.com/kalarani_vellas/p5rkjncaa9fh/wish/221466845