Yardroid - intelligent landscape robot

Yardroid has a wide variety of landscape tools, has unsurpassed mobility, as well as modern computer vision and artificial intelligence.

It mows your lawn autonomously, without wires around your back or front yard. The Yardroid is equipped with a rake that can loosen the soil to a depth of 2 inches. The device can also water a plot of land using 6 liters of water per minute. Yardroid carries a 1 liter tank to kill weeds,spsrying it right at the target.
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Awesome kinetic Pisces Lamp

It is based on a string that is driven by small motors, and the standing waves can have several knots that can be changed by touching the string while it is in motion.
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Innovative energy storage

This is the creation of the Swedish startup Azelio, whose specialists suggested storing thermal energy rather than final electricity.

For this purpose, the TES.POD uses an aluminum alloy as a storage medium, which is heated to 600 degrees Celsius. And the Stirling engine (which was developed back in 1816) generates electricity by converting thermal energy into a mechanical movement.

It takes 4-6 hours to fully charge the storage, while its capacity is 10-13 hours of output.
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Burning Orange

When mechanically exposed to the peel of an orange, a large amount of essential oils is released, and they are quite flammable.
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A mosquito lays eggs
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Countries with the lowest access to the Internet
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🇬🇧 Tower Bridge under construction, London, 1889. Colourized
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Vatican
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Automatic coupling of wagons
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GoSun Chillest — compact portable refrigerator powered by solar batteries

GoSun Chillest is an autonomous, portable refrigerator with a volume of 45 liters.

GoSun Chillest can maintain the desired temperature below zero using a compressor and thermostat.

The power consumption does not exceed 45 watts. As a power source, you can use the device's battery, an external power supply, direct current and solar energy. GoSun Chillest is equipped with a solar battery, which, if necessary, can also be used as a table.
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Restored videotape from Jerusalem.1897
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Amazing Dutch kites.
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🇵🇱 Polish resistance members, WWII
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Surface tension, taking soapy water as an example.
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The law of momentum conservation for rotational motion.
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Milky Way. Photo by Daniel Maran.
\#nature
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The interaction of molten salt (800 ° C) with water.
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A cave inside a frozen lake

Iceland
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