How LDR Works ???

           LDRs or Light Dependent Resistors are very useful especially in light/dark sensor circuits. Normally the resistance of an LDR ...

How to Power a TV with AAA Battery ???

     In the event of a power outage, you can temporarily charge and power your TV using a basic AAA battery. Powering a TV with a battery ...

How to Make a Metal Detector at Home ???

Y ou Will Need : AM or AM/FM Radio Calculator Standard CD Case Some Velcro Process :      Carefully disassemble the CD case...

How to perform Candle Science Trick ???

     You know you can put out a candle flame by pouring water on it. In this science magic trick or demonstration, the candle will go out w...

How to perform Travelling Flame Trick ???

    You know you can light a candle with another candle, but if you blow one of them out, did you know you can relight it from a distance? ...

How to Fake Fingerprints ???

NOTE : The post is only for educational purpose. In order to fake a fingerprint, one needs an original first. Latent fingerprints are not...

How to Take a Fingerprint with a Pencil ???

If you want to take fingerprints of people, use this recipe. It's different then most! It's very easy. You Will Need : A num...

How to make Fingerprint Powder at Home ???

No two people have matching fingerprints. Even identical twins, who may have very similar prints, have small differences that mak...

Chemical Colour Change Experiment !!!

Safety:  Sodium hydroxide is a powerful base (the opposite to an acid). Avoid contact with hands and clothes and wash thoroughly in case of ...

How to make a Solar Water Geyser at Home ???

You Will Need :   2L plastic bottles (60), Cartons (50) 100mm PVC pipe (70 cm) 20mm PVC pipe (11.7m) 90-degree 20 mm PVC elbows (4...