🤔 How it works …….. ⁉
How the Radium is made:
Radium is present in all uranium ores, and could be extracted as a by-product of uranium refining. Uranium ores from DR Congo and Canada are richest in radium. Today radium is extracted from spent fuel rods from nuclear reactors. In 1954, the total worldwide supply of purified radium amounted to about 5 pounds (2.3 kg) and it is still in this range today, while the annual production of pure radium compounds is only about 100 g in total today. Radium’s main practical use has been in medicine, u tr radon gas from radium chloride to be used in radiotherapy for cancer.
Pure radium was isolated in 1902 by electrolysis by Marie Curie and Andre Debierne, a French chemist, according to New World Encyclopedia. Radium E, known to be bismuth-210, was the first synthetic radioactive element that was created synthetically by scientists at the University of California.
Radium is classified as an “Alkaline Earth Metals” which are located in Group 2 elements of the Periodic Table. Pure radium is silvery-white, but it readily reacts with nitrogen (rather than oxygen) on exposure to air.
😳Why❓❓❓
Why we will see image of any bright thing even after closing our eyes:
Closed-eye hallucinations are related to a scientific process called phosphenes. These occur as a result of the constant activity between neurons in the brain and your vision. Even when your eyes are closed, you can experience phosphenes. At rest, your retina still continues to produce these electrical charges.
Closed eye visualisation or photopsias or phosphenes is an entoptic phenomenon in which bursts of bright colours appear all across field of vision when eyes are closed or when one is in a dark room. Phosphenes come in 15 categories such as triangles, stars, spirals, spots, amorphous blobs, etc.
💁🏻♂️ GK TODAY
National Reptile (INDIA) : King Cobra
National Heritage Animal : Indian Elephant
National Vegetable: Pumpkin
National Aquatic Animal : Ganges River Dolphin
National River: Ganga
National Calendar : Saka calendar
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BORN TODAY 🐣💐
Sundari Mohan Das was the founder principal of the Calcutta National Medical College.
He was born in Sylhet on 17 December 1857.
He was a Indian independence activist, doctor and social worker.
IDIOMS & PHRASES:
Like two peas in a pod:They’re always together.
*ANTONYM*
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*SYNONYMS*
Formerly – Previously
🧬 HEALTH CARE: HOME REMEDIES🩺
Drink a glass of water* first thing in the morning
it’s best to start your day by re-hydrating with a full glass of water. Hydrating first thing in the morning helps to aid digestion, enhance skin health and boost energy.
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Ch Narmada Naveen Kumar |
