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The invention of construction workers’ hard hats

The invention of construction workers’ hard hats

Categories: Construction, Construction worker, E W Bullard, Hard hat, Hoover dam, invention, Invention, Safety, Steaming canvas, World War I

The construction workers’ hats were invented by E.W. Bullard, who was inspired by the steel helmets he wore during World War I. He devised what is now known as 'hard hats'. They were called so because they were made by steaming canvas and glue to make a hard material, which were then fashioned into hats. When the Hoover Dam was …

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The river that flows in two directions

The river that flows in two directions

Categories: Ecological, freshwater, Hotspot, Lake, May, Mekong, Mekong river, Nature, November, River, Tonlé Sap

The Tonlé Sap River is attached to a freshwater lake also known as the Tonlé Sap Lake. It connects the lake with the Mekong River, which is the world’s twelfth longest river. It flows north from November to May feeding the Mekong River with water from the lake. However, with the arrival of the monsoon season, the Mekong River swells …

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Pound is abbreviated ‘lb’ after the constellation Libra

Pound is abbreviated ‘lb’ after the constellation Libra

Categories: 'lb', ‘balance scales’, Constellation, Language, Latin, Libra, libra pondo, Pound, Unit, Weight

The unit pound is abbreviated ‘lb’ which comes from the constellation Libra. The word libra means ‘balance scales’ in Latin. The ancient Romans used the term libra pondo to refer to weight. Libra meant ‘weight’ and pondo meant ‘pound’. This was eventually shortened to libra which came to be abbreviated as ‘lb’.

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Do I know you? – Facing face blindness

Do I know you? – Facing face blindness

Categories: Agnosia, Face, Face blindness, Features, Health, Prosopagnosia, Prosopon, Recognition

The inability to identify familiar people by their faces is called prosopagnosia. The term ‘prosopagnosia’ is derived from two Greek words prosopon meaning ‘face’ and agnosia meaning ‘not knowing’. This condition occurs when the brain is unable to assign a set of facial features to an identity. The person might, however, be able to identify objects. It is also called face …

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The meaning of 'dinosaur'

The meaning of 'dinosaur'

Categories: Anatomist, Bones, Deinos, Dinosaur, English, Fossil, Greek, Language, Lizard, Reptile, Richard Owen

The name dinosaur is derived from two Greek words: deinos meaning ‘fearfully great’ and sauros meaning ‘lizard’. It was coined by the English anatomist Richard Owen in 1842. Owen recognized that the huge fossilized bones unearthed at several places in nineteenth-century England were markedly different from the bones of the other existing reptiles.

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How to call Antarctica from another country

How to call Antarctica from another country

Antarctica has four bases with their own city dialling codes. The city code of Davis Base is 10, Mawson Base is 11, Casey Base is 12 and Macquarie Base is 13. The international telephone dialling code for Antarctica is 672. To dial Antarctica, say from India, you will have to dial the international exit code, which is +91 for India, …

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The word 'modem' is a contraction

The word 'modem' is a contraction

A modem is a device that enables a computer to transmit data over telephone or cable lines. The word modem is actually a contraction of the words modulator and demodulator (MOdulator/DEModulator). Modems are usually classified by the amount of data they send in a specific unit of time expressed generally in bits per second.

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