Preloader image
 
   
19 Dec
0

How to swing a glass of water in a circle experiment

In Atal Tinkering Labs ATL | No comment

It seems as if the water in the glass is defying gravity, but is it really? No. Gravity – the force pulling down on everything – is still at work even when the glass and water are above your head. The water’s inertia wants to keep the water traveling in a straight path, but gravity is acting on the water, causing it to fall in a downward path that will eventually hit the earth.   However, while the water is falling, the glass is falling with it, catching the water. What keeps the glass and water moving in a nice…

19 Dec
0

Ivory Soap Experiment

In Atal Tinkering Labs ATL | No comment

Ivory’s first slogan, “It Floats!”, was introduced in 1891.   Ivory bar soap is whipped with air in its production and floats in water. Other brands of soap do not have as much air in it and will not have the same result. We did not test any other brands in the microwave.   When Ivory soap is heated in a microwave it gets hot and causes the soap to get soft. The microwaves beaming in the oven excite the water and air molecules inside the soap cause them to move in opposite directions from each other and vaporize. The…

19 Dec
0

Coin launcher Experiment

In Atal Tinkering Labs ATL | No comment

When you cool air it shrinks, extra air is pushed into the bottle.   Then the wet coin seals the top of the bottle as it freezes. So as the temperature increases the pressure builds up.   This means that when you heat up the air again with your hands, it pushes outwards harder and harder until the pressure on the bottom of the coin is large enough to break the ice around it. As the ice breaks the coin is pushed upwards and flies away from the bottle.  

19 Dec
0

Ping Pong Ball BLAST OFF! Experiment

In Atal Tinkering Labs ATL | No comment

When I released the cup, the ball and water all fall together at the same speed, which increases as they continue to fall due to the force of gravity. The cup hits the ground first, then the water slams into the bottom of the cup. As water molecules pile up they collide with each other and create a compression wave that travels upwards very fast, like instantly. The water has much, much more mass than the ping pong ball, so when the upward moving wave collides with the downward moving ball a tremendous amount of energy and momentum is transferred…

19 Dec
0

Touch and See Squares Experiment

In Atal Tinkering Labs ATL | No comment

Liquid crystals represent a phase in between liquid and solid. The molecules in a liquid crystal can move independently, as in a liquid, but remain somewhat organized, as in a crystal (solid).   These liquid crystals respond to changes in temperature by changing color. As the temperature increases, their color changes from red to orange, yellow, green, blue   What’s going on? The liquid crystal sheet is temperature sensitive, and an detect where your hand warmed the sheet.   Blue is the warmest, then green, orange and red. Black is the room temperature.   Blue – (82o – 86oF) Green…

19 Dec
0

A Magnet Linear Accelerator Experiment

In Atal Tinkering Labs ATL | No comment

When the Magnet Linear Accelerator shoots, it will happen too fast to see. The ball on the right will shoot away from the gun, and hit the target with considerable force. Our one foot long version is designed so the speed is not enough to hurt someone, and you can use your hand or foot as a target.   How does it work? When you release the first ball, it is attracted to the first magnet. It hits the magnet with a respectable amount of force, and a kinetic energy.   The kinetic energy of the ball is transferred to…

19 Dec
0

Floating Rice with Friction Experiment

In Atal Tinkering Labs ATL | No comment

Start off with a one question SURPRISE QUIZ. Its yes no answer and self grading. You can do it.   Can I lift a bottle full of rice by putting a chop stick in the bottle of rice?   Well lets see.   Don’t underestimate the Power of Friction. This is something that happens everyday, but we don’t notice it.   What’s Going On? When the rice is inside the bottle, there are grains next to one another, but there is a little bit of space — an air pocket — in between each grain and its neighbor. Which allows…

19 Dec
0

Dancing Ping Pong Ball experiment

In Atal Tinkering Labs ATL | No comment

Why does this happen? Glass has a natural frequency where it vibrates. When you rub your damp finger on the outside of the glass your finger sticks to the glass because of friction and then slips because of the water which forms a cushion that reduces friction. When this slip and stick happens in equal intervals it causes the glass to vibrate.   The vibration from the glass pushes the air molecules around the glass in equal intervals, causing compression waves to form and ultimately make the sound we hear. The ping pong ball dances because it gets pushed by…

19 Dec
2

The Spinning Ball experiment

In Atal Tinkering Labs ATL | No comment

Place the jar over the ball so that the ball is inside the mouth of the canning jar. Then start spinning the glass around in a circular motion. Once the ball starts spinning inside the glass lift it from the table top. The ball is lifted from the table and will continue to spin inside the glass until it loses is speed.   As a ball velocity increases inside the glass, the centripetal force increases. That force is what’s keeping the ball stuck to the walls of the glass.   As the ball goes faster, the resulting friction begins to…

19 Dec
0

Magnetic Money Science Experiment

In Atal Tinkering Labs ATL | No comment

This experiment involves magnets, be aware of the danger of children swallowing them. Adult supervision is required.   Try holding the magnet over the $1 bill and see which part is pulls up.   The Federal Reserve prints money they use a iron oxide which is magnetized when another magnet is present.   Vending machines use scanning technology called Magnetic Ink Character Recognition (MICR). This technology is use to find the magnetic pattern on it and to determine its denomination. Counterfeit detectors use similar technology to detect fake bills.  

19 Dec
5

Cups and ball Centrifugal Force Experiment

In Atal Tinkering Labs ATL | No comment

Now the object of this experiment is to separate the two balls – put one ball in each glass, this would seem tough. But just place the glasses on a table and spin them! The balls will be separated. The spinning glasses will make the balls fly towards the extreme ends.   When you swing an object around on a string or rope, the object will pull outward on the string. This is called the centrifugal force and is caused by the inertia of the object, where it seeks to follow a straight-line path. It is also called an inertial…

19 Dec
0

How much water is in a ORANGE? Experiment

In Atal Tinkering Labs ATL | No comment

All living things must have water to survive. The good ol water cycle recycles water all the time. Evaporation is the change of liquid-water to water vapor. Evaporation of water occurs everyday whether it is in a cup or lake. Evaporation is a major part of the water cycle.   After the orange slices where completely dry, which took about 24 hours. You can speed up the process by using a hair dryer or fan. I just left mine in the sun the natural way. I put them back on the weighing scale. Remember the orange weighed 61 oz (1,803…

19 Dec
0

Mpemba Effect

In Atal Tinkering Labs ATL | No comment

This phenomenon of hot water freezing faster than cold water is known as the Mpemba effect.   I tried this 3 times with the same results.   Hot water seems to freeze faster than cold water, known as the Mpemba effect. The effect was named after the Tanzanian student who in 1963 noticed that hot ice cream mix freezes faster than a cold one. The effect was first observed by Aristotle in the 4th century BC, then later Francis Bacon and René Descartes.   Theories for the Mpemba effect have included faster evaporation of hot water, therefore reducing the volume…

19 Dec
3

Absorption and dissolving with sugar cubes in water experiment

In Atal Tinkering Labs ATL | No comment

When I pour the water on to the plate you noticed that the bottom sugar cube absorbs the colored water and it slowly moves upwards to the top sugar cube. This is because adhesive forces between the water molecules and the sugar molecules, along with cohesion with- in the liquid, allowed the water to move up the sugar cube tower against gravity. This process is called capillary action.   The reason sugar dissolves in a cup of coffee? It’s because of the way water molecules interact with molecules in other substances. A water molecule has powerful magnetic properties, because of…

19 Dec
0

Paper Chromatography Experiment

In Atal Tinkering Labs ATL | No comment

Chromatography is a technique that is used by scientists to separate mixtures. A mixture is placed on paper and a liquid is added. As the liquid travels through the paper, it acts as a solvent and dissolves everything in the mixture, so the mixture begins to travel with the liquid.   The various components of a mixture all have different properties, so they will travel at different speeds and separate. For example, if we do paper chromatography with black ink, we will observe a separation of the colors that make up the black color! What pigments (colors) do you think…

19 Dec
0

Separating Books Experiment

In Atal Tinkering Labs ATL | No comment

Start off with two books the same size, interleave them together. About one inch (2.54cm) overlapping. Then you and a partner pull as hard as you can to separate the books. You can’t do it, because Friction is a DRAG!   All that is holding the two books together is friction. This is the same force that acts to stop you sliding a book across a table.   When you interleave the two books there is a small force pulling the two books together created by the spine of the book.a table.   This compressive force will create a frictional…

19 Dec
0

Reverse Image Magnifying Glass experiment

In Atal Tinkering Labs ATL | No comment

Put the magnifying glass between the wall and the window About 10-30 cm (4 -12 inches). You will see the right distance will be in focus on the wall.   Most magnifying glasses are double-convex lenses and are used to make objects appear larger. This is accomplished by placing the lens close to the object to be viewed. In this way the light rays are bent toward the center of the lens. When these bent rays reach the eye they make the object appear much larger than it actually is. However, if the object is far enough away from the…

19 Dec
0

Spinning fluids in your ears Experiment

In Atal Tinkering Labs ATL | No comment

The principle of inertia, If an object is at rest, it will stay at rest until something forces it to budge, and if it’s moving, it will keep moving until ground to a halt. That’s why spinning makes you dizzy.   There are three Loop-shaped canals in your inner ear contain fluid and fine, hair-like sensors that help you keep your balance. Each one senses the movement of your head along different axis. Your ears sense motion by detecting the way tiny strands of hair lining the canals wave back and forth in this moving liquid, like water plants swaying…

19 Dec
0

Earthquake Epicenter Experiment

In Atal Tinkering Labs ATL | No comment

The epicenter is the point on the Earth’s surface that is directly above the hypocenter or focus, the point where an earthquake or underground explosion originates.   Nearly everyone in California lives within 30 miles of an active fault that could cause a damaging earthquake. In fact, some 2,000 known faults criss-cross California, and scientists continue to discover new ones.   Earthquakes happen all the time Since 1994, according to the U.S. Geological Survey (USGS), California has experienced 1,172 earthquakes with a magnitude 4.0 or greater   • As the magnitude 6.9 Loma Prieta earthquake of 1989 proved, sometimes the…

19 Dec
0

Moving Optical Illusions experiments

In Atal Tinkering Labs ATL | No comment

The parallel lines template must be printed onto a transparency sheet. The other images may be printed on paper. It’s important that you print everything at the same size for the motion effect to work properly. Any office store will print it on transparency for you.  

error: Context Menu disabled!