💧Hand clamping increases the pressure in the bottle. Because of the pressure, the density changes and the match head begins to sink to the bottom of the bottle.

⚙️ Engineering

🧲Mendocino Motor

An electric motor with magnetic levitation of the rotor and powered by solar energy.

⚙️ Engineering

😮Glass and hydraulic press

⚙️ Engineering

Magnetic ferrofluid tree sculpture: The "Nano-Tree" from Concept Zero uses a gold-colored ferrofluid that can be manipulated with a handheld magnet

⚙️ Engineering

Hydrophobic sand

Hydrophobicity is a property of molecules denoting the "tendency" to avoid contact with water, the disinclination to wet and mix with water. In everyday life, the manifestation of hydrophobicity can be observed in the behavior of oil with water.

A simplified mechanism of this phenomenon: water consists of polarized molecules (roughly speaking, a magnet with two poles: plus and minus), so it mixes well with other polarized molecules, while hydrophobic molecules are not polarized (so simplifying: the magnet has nothing to cling to).

⚙️ Engineering

💪 Check out the hydraulically actuated suspension

⚙️ Engineering

⛳️The roller could not crush a golf ball

After compression of polymers, the density of an ordinary golf ball is equal to 40 kilograms of steel compressed to four centimeters in diameter.

⚙️ Engineering

☀️ The so-called "phosphorus sun"

The reaction of red phosphorus with oxygen. The reaction product is phosphorus (V) oxide. Phosphorus oxide is used as a desiccant for gases and liquids.

⚙️ Engineering

🪫 A prototype of flexible solar cells that can be printed like newspapers

⚙️ Engineering

🛞Tire and centrifugal force

⚙️ Engineering

🥃 A clear example of centripetal motion

⚙️ Engineering

🧪A supersaturated solution of sodium acetate. A crystal of sodium acetate was added to provoke crystallization.

⚙️ Engineering

💥The operation of a wedge-air rocket engine

A type of liquid rocket engine with a wedge-shaped nozzle that maintains aerodynamic efficiency over a wide range of altitudes above the Earth's surface with different atmospheric pressures.

⚙️ Engineering

🌊Imitation of waves from Lego

⚙️ Engineering

🏗 A simple example of how hydraulics work

⚙️ Engineering

🎬 Digital sculpting in collaboration with a 3D printer

⚙️ Engineering

🔫Gatling bubble gun

⚙️ Engineering

🌽A visual demonstration of Stokes' Law in corn syrup

Stokes' Law, named after George Gabriel Stokes, describes the relationship between the frictional force of a ball moving in a fluid and other quantities (like the radius of a particle, the speed of a particle). If a ball or body moves in a liquid, it must overcome the force of friction.

⚙️ Engineering

The most gorgeous single-phase ground fault

⚙️ Engineering

Slo-Mo and gravity = a sticky experiment

⚙️ Engineering

The simplest, yet most useful cable break test tool 👍

⚙️ Engineering