The history of the barometer (and how it works) – Asaf Bar-Yosef

The history of the barometer (and how it works) – Asaf Bar-Yosef

Aristotle famously said, “Nature fears of empty space” when he claimed that a true vacuum, a space devoid of matter, could not exist because the surrounding matter would immediately fill it. Fortunately, he turned out to be wrong. A vacuum is a key component of the barometer, an instrument for measuring air pressure. And because […]

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How to conduct a Bathymetric Survey

How to conduct a Bathymetric Survey

In this video, I’m going to talk you through how to conduct a bathymetric survey. This is important to make sure that your equipment is in prime condition and ready when you arrive on site. This can include transporting the survey boat and launching it in the survey area, however in some cases this can […]

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15 Product Promotion

15 Product Promotion

The town of Soultzmatt is in the east of France close to the borders with Germany and Switzerland. Local people first discovered a source, or spring in the thirteenth century. In the seventeenth century, the local government of the Alsace region allowed companies to exploit the springs in the area and sell the water. However, […]

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How Waterless Shampoo Works

How Waterless Shampoo Works

This is waterless shampoo, and it could actually be healthier for your hair and the environment. It was invented by 26-year-old Kailey Bradt, who created OWA Haircare, a bottle of shampoo that’s only powder. You squeeze out a bit of that powder onto your hand, add a little water, then lather up. Shampoo production has […]

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How do your kidneys work? – Emma Bryce

How do your kidneys work? – Emma Bryce

It’s a hot day, and you’ve just downed several glasses of water, one after the other. Behind the sudden urge that follows are two bean-shaped organs that work as fine-tuned internal sensors. They balance the amount of fluid in your body, detect waste in your blood, and know when to release the vitamins, minerals, and […]

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How to Calculate Heat Duty

How to Calculate Heat Duty

Hi there, my name is Marina Miletic. Heat duty is the amount of energy the heat exchanger must transfer to the process fluid per unit time in order to cool or heat the process fluid to the desired temperature. Heat duty is the combination of the energy needed to cool or heat the process stream […]

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