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Interesting inventions and facts

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Physics Amal Sweis

A 3D printing pen called the 3Doodler allows users to draw and extrude plastic thread in thin air or on surfaces to create 3D structures, requiring no software. The pen is powered and plug

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Interesting inventions and facts
Who ever imagined that the weird impossible things that we thought of as kids would come true? -Ameer
A ROBOT A TRASH CAN. When you toss trash at it, a sensor detects the position of the trash, and sends the information to a PC. The PC calculates where the trash will fall, and communicates it to the can via wireless connection. The trash can has to move autonomously. To achieve that, I created a special mechanism, with a single axis for both the wheel rotation and the change in angle. So even if the wheels rotate, the position of the can itself doesnt change. That mechanism, the circuitry, and the motor controller all fit within the diameter of the can. If the center of gravity is high, the can will fall over, so I made the can low, narrow, and compact, to keep the center of gravity as low as possible.
CORTEX CAST Those who at least once had a broken limb know how wearing a cast can be unpleasant. Not only are they bulky, theyre also uncomfortable. The graduate of Victoria University in Wellington, New Zealand, has worn a plaster cast several months and it was extremely uncomfortable for him. He decided to do something about it. It is GEN 3-D PRINTED and is used to help heal broken bones.
THREE DIMENSIONAL PRINTING PEN Inventors Max Bogue and Peter Dilworth have invented a unique pen that draws in the air. A colorful spool of plastic thread is fed into the pen. The thread is then extruded as heated plastic that cools and solidifies instantly as it exits the tip. This allows solid 3D structures to be drawn on any surface or from any surface into the air. The pen, called a 3Doodler, weights approximately 7 ounces (198 g) and is 7 inches (17.7 cm) long. It requires no technical knowledge or software and plugs into an electrical outlet.
THE FASTER YOU MOVE, THE HEAVIER YOU GET If you run really fast, you gain weight. Not permanently, or it would make a mockery of diet and exercise plans, but momentarily, and only a tiny amount. Light speed is the speed limit of the universe. So if something is travelling close to the speed of light, and you give it a push, it cant go very much faster. But youve given it extra energy, and that energy has to go somewhere. Where it goes is mass. According to relativity, mass and energy are equivlant. So the more energy you put in, the greater the mass becomes. This is negligible at human speeds Usain Bolt is not noticeably heavier when running than when still but once you reach an appreciable fraction of the speed of light, your mass starts to increase rapidly.
HUMANITY IN A SUGAR CUBE Remember when you learned all about the basic structure of the atom protons, neutrons, electrons? You might recall there was a lot of empty space, and youd be right. Most of atoms is just empty space, so much so that if you gathered the entire human race together and removed the empty space of all the atoms that make them up you would be left with something no larger than a sugar cube. Incidentally a Sugar Cube Weighs Five Billion Tons Why? Because all that empty space doesnt have any mass, so the sugar cube of humanity would be extremely dense. Its the same principle behind why 1kg of bricks and 1kg of feathers weighs the same, but a box of bricks is denser and has more mass than an equally-sized box of feathers.
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Interesting inventions and facts

  • 2. Who ever imagined that the weird impossible things that we thought of as kids would come true? -Ameer
  • 3. A ROBOT A TRASH CAN. When you toss trash at it, a sensor detects the position of the trash, and sends the information to a PC. The PC calculates where the trash will fall, and communicates it to the can via wireless connection. The trash can has to move autonomously. To achieve that, I created a special mechanism, with a single axis for both the wheel rotation and the change in angle. So even if the wheels rotate, the position of the can itself doesnt change. That mechanism, the circuitry, and the motor controller all fit within the diameter of the can. If the center of gravity is high, the can will fall over, so I made the can low, narrow, and compact, to keep the center of gravity as low as possible.
  • 4. CORTEX CAST Those who at least once had a broken limb know how wearing a cast can be unpleasant. Not only are they bulky, theyre also uncomfortable. The graduate of Victoria University in Wellington, New Zealand, has worn a plaster cast several months and it was extremely uncomfortable for him. He decided to do something about it. It is GEN 3-D PRINTED and is used to help heal broken bones.
  • 5. THREE DIMENSIONAL PRINTING PEN Inventors Max Bogue and Peter Dilworth have invented a unique pen that draws in the air. A colorful spool of plastic thread is fed into the pen. The thread is then extruded as heated plastic that cools and solidifies instantly as it exits the tip. This allows solid 3D structures to be drawn on any surface or from any surface into the air. The pen, called a 3Doodler, weights approximately 7 ounces (198 g) and is 7 inches (17.7 cm) long. It requires no technical knowledge or software and plugs into an electrical outlet.
  • 6. THE FASTER YOU MOVE, THE HEAVIER YOU GET If you run really fast, you gain weight. Not permanently, or it would make a mockery of diet and exercise plans, but momentarily, and only a tiny amount. Light speed is the speed limit of the universe. So if something is travelling close to the speed of light, and you give it a push, it cant go very much faster. But youve given it extra energy, and that energy has to go somewhere. Where it goes is mass. According to relativity, mass and energy are equivlant. So the more energy you put in, the greater the mass becomes. This is negligible at human speeds Usain Bolt is not noticeably heavier when running than when still but once you reach an appreciable fraction of the speed of light, your mass starts to increase rapidly.
  • 7. HUMANITY IN A SUGAR CUBE Remember when you learned all about the basic structure of the atom protons, neutrons, electrons? You might recall there was a lot of empty space, and youd be right. Most of atoms is just empty space, so much so that if you gathered the entire human race together and removed the empty space of all the atoms that make them up you would be left with something no larger than a sugar cube. Incidentally a Sugar Cube Weighs Five Billion Tons Why? Because all that empty space doesnt have any mass, so the sugar cube of humanity would be extremely dense. Its the same principle behind why 1kg of bricks and 1kg of feathers weighs the same, but a box of bricks is denser and has more mass than an equally-sized box of feathers.