The magician with the banknote printing machine On the show "Penn & Teller Fool Us", the magician Ed Ripley introduced a machine that has built himself and transforms plain paper into banknotes.
A simple faucet, using physics 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.
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.
Bond strength in nailing two pieces of wood What is the best method of joining two pieces of wood with nails to give us the strongest connection; The answer is given by a simple test.
Painting flowers A professional painter shows us her "simple" technique with which he paints some flowers.
Weather presenter discovers he has a touch screen On the morning of Thursday, August 4, 2022, live on the American channel ABC 7 Chicago, weatherman Greg Dutra was surprised to see the image move when his hand touched the screen he uses every day to present the weather forecast. He had just found out, that the screen is touch sensitive, allowing him to pan the map or zoom with a simple finger tap. His reaction greatly amused the show's co-hosts.
Kush Kash: A musical instrument from Ghana Cous Kash or Kasaka, is a very simple musical instrument from west Africa. It is a percussion instrument consisting of two small gourds (from the Oncoba spinosa tree) full of beans - essentially two small maracas connected by a string. One pumpkin is held in the hand and the other is quickly rotated from side to side around the hand, making a sound on impact.
How to calm a crying child How to calm a crying child; Is simple: just focus his attention on something else by giving him an object. Here, a mother gives a spoon to her child to calm him down. Unfortunately, the method didn't work this time, since the little one will use the spoon to hit his brother on the head.
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.
A carousel on the side of the road How to increase the adrenaline of a carousel; Is simple: you just place it on the side of a traffic road.
The game with the cup A group of friends have fun playing a prototype game, which they named the Water Cup Challenge. The goal of the game is simple, everyone in turn should pour water into a full cup. The first one who spills water loses and has to fall into the pool.
Physics lesson with a knife and a potato A simple demonstration of inertia, using a knife and a potato. From Dr.. Tatiana Erukhimova, Department of Physics & Astronomy, University of Texas.