Wireless Electricity (Tesla Coil)
Materials required: Enamelled copper wire 35 SWG Enamelled copper wire 25 SWG Transistor 2N2222A or PN2222A Resistor 22K LED Battery 9V Switch (Slider type) Card Board Transparent Tape Connecting wires…
HOW TO MAKE A HOMOPOLAR MOTOR
What you need: Copper wire 27 SWG 1.5 feet length Neodymium magnets (round) 2-pcs Battery AA-size 1-pcs Wire cutter Submitted by: Prashant Kumar Sinha
HOW TO MAKE A TOY PHONE
What you need: 2 plastic cups A thread roll A match stick A compass A pair of scissors Submitted by Khushant Kumar Gola
Drinking Straw Hydrometer
Drinking straw hydrometer
Take a drinking straw about 20 cm long. Seal one end with wax, and introduce some lead shot or fine sand until it floats in a vertical position. Then drop…
Mystic Roller- a test for Newton’s laws
Materials required: A Cylindrical Plastic Jar Rubber band A Heavy Nut Thread Wire steel or copper Pliar scissors A nail to make holes Video|Step 20 : Now we are done,…
Communication System
Denice is asking to his uncle Bean, why mobile phone towers are usually made so high while we can use intercom phone without using such big towers? Do you know…
Image Credits: NASA| The Kuiper Belt
THE KUIPER BELT
THE KUIPER BELT The Kuiper Belt: The issues surrounding the discovery of astrophysical objects can be complex. Sometimes these objects get discovered by chance and on other occasions, their existence is…
Description:Timeline of the metric expansion of space, where space (including hypothetical non-observable portions of the universe) is represented at each time by the circular sections. On the left, the dramatic expansion occurs in the inflationary epoch; and at the center, the expansion accelerates (artist's concept; not to scale).
Source: Wikipedia
Hundred years of cosmology
Over the past four centuries, we have witnessed a huge and rapid growth in our understanding of the Universe. It started with the ideas on Gravitation and Celestial Mechanics in…
Light pollution
Light plays an important role in our life. It is one of the sources of our energy. Light gives us safety in the night and most of the crimes take…