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What french chemist noticed that uranium salts could fog photographic plates even without being exposed to sunlight?
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∙ 12y ago
Micheal angelo
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∙ 12y ago
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Who noticed that the chemical properties of elements increased in a periodic manner?
Dmitri Mendeleev, a Russian chemist, noticed that the chemical properties of elements increased in a periodic manner and arranged them into the periodic table in the 1860s. Mendeleev's periodic table was based on atomic mass and led to the development of the modern periodic table based on atomic number.
How was phosphorescence discovered?
Phosphorescence was discovered by accident in the 1600s when scholars noticed that certain materials glowed after being exposed to sunlight. However, the phenomenon was not understood until the 19th century when scientists began studying the chemical and physical processes behind it. The discovery of phosphorescence led to advancements in various fields, including materials science and bioluminescence research.
Did an English scientist create the first periodic table of elements?
No, the first periodic table of elements was created by the Russian chemist Dmitri Mendeleev in 1869. Mendeleev arranged the elements in order of increasing atomic mass and noticed a periodic pattern in their properties, which led to the development of the modern periodic table.
Which scientist suggested the symbols of elements?
Dmitri Mendeleev, a Russian chemist, is credited with suggesting the symbols of elements in his periodic table. He arranged elements by increasing atomic mass and noticed patterns in their properties, leading to the creation of the periodic table in 1869.
Who discovered LPG?
Dr. Walter Snelling, an American chemist, is credited with the discovery of LPG (liquefied petroleum gas) in 1910. Snelling noticed that a combination of propane and butane could be compressed into a liquid form for easier storage and transportation, leading to the development of LPG as a widely-used fuel source.
Who noticed that the chemical properties of elements increased in a periodic manner?
Dmitri Mendeleev, a Russian chemist, noticed that the chemical properties of elements increased in a periodic manner and arranged them into the periodic table in the 1860s. Mendeleev's periodic table was based on atomic mass and led to the development of the modern periodic table based on atomic number.
How did Becquerel discovered radioactivity discovered radioactivity?
Henri Becquerel discovered radioactivity in 1896 while conducting experiments with uranium salts. He accidentally found that photographic plates wrapped in black paper near a sample of uranium salts became fogged, indicating the emission of radiation from the uranium. This unexpected discovery led to further research and the development of the concept of radioactivity.
How was phosphorescence discovered?
Phosphorescence was discovered by accident in the 1600s when scholars noticed that certain materials glowed after being exposed to sunlight. However, the phenomenon was not understood until the 19th century when scientists began studying the chemical and physical processes behind it. The discovery of phosphorescence led to advancements in various fields, including materials science and bioluminescence research.
Why radiant energy bad?
The question is based on a lack of understanding of what radiant energy is! It is not bad: there would be no life on earth if it were not for sunlight - which, in case you had not noticed, is a form of radiant energy.
Who created Maybelline New York?
The Maybelline Cosmetics Company was created by a New York chemist, T.L. Williams, in 1915, after he noticed his sister applying a mixture of coal dust and vaseline to her eyelashes and thought he could do better.
What did becquerel observe when he later took the items out of the drawer?
When Becquerel took the items out of the drawer, he observed that the uranium compound had fogged up the photographic plate wrapped with them, indicating that the uranium was emitting radiation capable of penetrating the paper covering the plate. This accidental discovery led to the development of the field of nuclear chemistry.
Who invented the bullet proof glass?
Bulletproof glass was invented by French chemist Edouard Benedictus in 1909. Benedictus accidentally discovered the technology when he noticed that a glass flask coated with plastic layers did not shatter when dropped.
Did an English scientist create the first periodic table of elements?
No, the first periodic table of elements was created by the Russian chemist Dmitri Mendeleev in 1869. Mendeleev arranged the elements in order of increasing atomic mass and noticed a periodic pattern in their properties, which led to the development of the modern periodic table.
Who invented dry erase markers?
Jerry Woolf, a chemist in the 1970s, is credited with inventing the dry erase marker. Woolf noticed that a marker he was using was dry and left a mark on a glossy surface, which led to the development of the dry erase marker.
How was oxygen was discovered?
Oxygen was discovered for the first time by a Swedish Chemist, Carl Wilhelm Scheele, in 1772. Joseph Priestly, an English chemist, independently, discovered oxygen in 1774 and published his findings the same year, three years before Scheele published. Antonie Lavoisier, a French chemist, also discovered oxygen in 1775, was the first to recognize it as an element, and coined its name "oxygen" - which comes from a Greek word that means "acid-former".
Are okapis part zebra?
No, the stripes on the okapi's legs are for camouflage so they won't get noticed as easily as some animals on the forest floor. The sunlight filters in to the floor in little group that looks like stripes
What did Brian observe in his surroundings?
Brian observed the lush greenery of the forest, the sounds of chirping birds and buzzing insects, and the cool, fresh air. He also noticed the sunlight filtering through the dense canopy above.
