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A simple faucet, using physics
(9) | 25/04/2024 | Translate: The construction of a simple faucet in the countryside using air pressure in a bottle. Water flows out of the yellow straw if the pressure in the bottle is greater than atmospheric pressure. By moving the blue straw up, we reduce the pressure on the end of it and air leaks through it. Because there is a leak, the air gap is reduced under the lid and the water flows out. By moving the blue straw down, we increase the pressure at its lower end due to the water column and the water stops flowing.
The magic puzzle Quadrix is a very interesting puzzle, in which you must squeeze a small square piece into a circle already formed. The trick is that the blue pieces have slight tolerances between the (the pieces do not fit exactly and have small gaps), and with proper provision allowing the sum of gaps for a place in the yellow track.- A omopoliko motor A young man from Italy shows us some omopolika motor with batteries and magnets, moving up in foil. For the construction of a omopolikoy motor, need a simple AA battery and two coin-shaped magnets. If we say that the South Pole of the magnet is the North S N, the construction should be done in the following way to work:
S-N battery N-S
N-S battery S-N
that is, the same pole must be at both ends of the battery. The motor must then be placed onto a conductive surface, as a foil.
- Building a simple hydrogen generator The user of Youtube "Skill Make", he shows us how he makes a generator from old batteries that decomposes water into hydrogen and oxygen, to create hydrogen gas.
- The launch A cat opens the lid of a dustbin with its paw, throwing another cat sitting on him into the air.
- Rail welding Although in the past the rails had to have a gap between them to cope with temperature expansion/contraction, this technique is no longer applied to high-speed trains. The rails are welded together for several kilometers, and then heated to a high temperature to fully expand. Rail fasteners use very high clamping force, and so the contraction is much less. A second technique is the expansion joint, which may be different: it is no longer a mere gap, but a smooth joint where the two rails are side by side and when they grow or shrink in length they can slide next to each other.
- The best swing ever made This swing has a very simple but smart construction, so that the parent can swing with his baby.
- Manufacture of glass bottles in a factory A brief tour of the production line of a glass bottle factory. The molten glass falls as we see at the beginning into pieces at the lowest point where the molds are located. The tempered glass enters the molds, and then a nozzle pushes air into the orifice to form the bottle into the mold.
- Gas explosion under an intersection (China) In Wuhan city of China, two workers were working in the middle of a crossroads, most likely repairing a gas leak. As a motorcyclist passed by them, the gas ignition caused a large underground explosion. The explosion was so loud that it lifted the road and threw the motorcyclist in the air.
- Construction of a large metal loop This hydraulic press from the German company Sahm Splice can press the ends of a steel cable with a force of 6000 kN (600 tons).
- An LEGO submarine The construction of a radio-controlled submarine with Lego components and a glass hull. Magnetic connectors were used for propellers and the rudder, so that no holes need to be made in the container and thus the slightest leakage is avoided..
- Construction worker is saved from certain death A worker on the roof of a building removes a wooden concrete form, when the air will entrain the wood, pushing the worker in vacuo. Last minute, the man will be caught by a betoverga and save himself.
- A little girl without patience A little girl tries to put a straw in a glass lid. But it has no patience and immediately dislikes.
- An algorithm that removes water from underwater photos Underwater photographs are blue-green appearance due to the absorption and diffusion of light on the water. The researcher and oceanographer Derya Akkaynak has developed an algorithm to suppress this phenomenon so that the underwater fauna and flora recover their original colors in photos. The Akkaynak explains that this is not a simple image processing work in Photoshop or the Instagram filter.
- Construction of a fridge for the countryside A man from Mexico builds a makeshift refrigerator to keep chilled beers in the countryside.
- When an air leak is frozen at very low temperature Leakage in a portable air compressor (compressor), created this unlikely ice formation. The portable compressors lack of moisture removal system from the air as stable. So the water in the air froze fast enough, and create an ice shell in the shape of leakage.