Monday, 3 June 2013

சென்சார் டெஸ்ட் மூலம் சர்க்கரை நோய் மற்றும் ஹார்ட் பிரச்னைகளுக்கு சிகிச்சை!

இப்பொதெல்லாம்  தினம்தோறும் உருவாகும் புது வியாதிகள் மட்டுமின்றி பழைய வியாதிகளைக் குணப் படுத்த அல்ல்து கட்டுப் படுத்த புதிய வகை கருவிகளையும் கண்டுபிடித்துக் கொண்டேதான் இருக்கிறார்கள். அந்த வகையில் இரத்த அழுத்தத்தை அளவிடும் முறையில் கருவி ஒன்றை ஆராய்ச்சியாளர்கள் கண்டுபிடித்துள்ளனர்.தற்போது உபயோகத்தில் இருக்கும் கருவிக்கு மாற்று கருவியாக இதை கண்டறிந்துள்ளனர். கடிகாரம் போன்ற இக்கருவியில் உள்ள சென்சார் இரத்த குழாயின் நாடித்துடிப்பு அலையை அளவிட்டு...

Cold Metal - "Cold" metal and "warm" wood may be the same temperature.

Cold Metal  "Cold" metal and "warm" wood may be the same temperature. Your hand is not always a good thermometer. When you touch a variety of materials, some will seem warmer or colder than others, even when they are at the same temperature.   Various materials (metal, wood, Styrofoam, glass, plastic, cardboard, etc.) with one flat surface larger than the size of your hand.A...

Circles of Magnetism IV - Two parallel, current-carrying wires exert forces on each other.

  Circles of Magnetism IV  Two parallel, current-carrying wires exert forces on each other. When an electric current flows through a wire, a magnetic field is created around the wire. If you place two current-carrying wires near each other, the magnetic field around each wire exerts a force on the current flowing in the other wire. These forces can push two current-carrying wires apart, or pull...

Circles of Magnetism I - You can make a magnetic field that's stronger than the earth's!

  Circles of Magnetism I  You can make a magnetic field that's stronger than the earth's! Compass needles are little magnets that are free to rotate. Compasses allow us to observe the direction of a magnetic field. Normally, they respond to the earth's magnetic field, orienting themselves parallel to magnetic field lines. If we create a magnetic field that is stronger than the field of the earth...

Cheshire Cat - Make a friend disappear, leaving only a smile behind.

Cheshire Cat  Make a friend disappear, leaving only a smile behind. Under most circumstances, both of your eyes receive fairly similar views of the of the world around you. You fuse these views into a single three-dimensional picture. This Snack lets you explore what happens when your eyes receive different images.   A handheld mirror, approximately 4 to 6 inches (10 to...

Charge and Carry - Store up an electric charge, then make sparks!!!

Charge and Carry  Store up an electric charge, then make sparks. Are you tired of electrostatic experiments that just won't work? This experiment will produce a spark that you can feel, see, and hear. You rub a Styrofoam plate with wool to give it a large electric charge. Then you use the charged Styrofoam to charge an aluminum pie pan. The entire apparatus for charging the aluminum plate is called an...

Center of Gravity - How to balance a checkbook using the physics method !

Center of Gravity  How to balance a checkbook using the physics method. Here is an easy way to find the center of gravity of a long, thin object, even if the object's weight is unevenly distributed.   A meterstick, cane, or any stick of similar length. Clay or weight.Masking tape.  (5 minutes or less)First try the experiment with just the stick itself. Then tape...