Spanish Civil War, a Republican group of volunteer British ambulance drivers in Barcelona 1937. Colourised.
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▫️ How alcohol preferences change with age

The survey is certainly American and the results for other countries will be different, but there are some common trends: young people prefer cocktails (64% in the 21-29 age group and 71% in the 30-39 age group), middle-aged people prefer beer (the number one choice for those aged 40-59), and the elderly people strike a balance between wine and beer
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Roma
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That’s what happens when two paintballs collide in the air.
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A realistic and most importantly working model of the transmission made of wood
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BMW changes color
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Iron can burn❗️

Under normal conditions, the oxidation rate of iron depends strongly on its form: a simple piece of metal does not burn, but thin fibers of iron or fine powder can easily be ignited.

It all depends on the contact surface of the iron with the air: it should be enough so that the oxidation reaction can sustain itself.

Iron wool consists of fairly thin fibers of iron. Oxidation on such a surface produces enough heat to keep the reaction going, and it runs "on its own”.
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Adult and juvenile swordfish

The candle was placed between the plates with a potential difference of 10,000 volts.
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🇬🇧 A man playing a bugle while riding a penny farthing bicycle, London, 1932
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Street life in Peking (Beijing), 1921 - colourized postcard
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Nvidia has taught the neural network to animate a 3D model of a face based only on voice.

Audio2Face works both with ready-made audio files and in real time. The program supports four languages, including Russian.
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