How to measure the thickness of a coin very easily?

HOW TO MEASURE THE DIAMETER OF A SPHERICAL BALL How to measure the diameter and radius of a spherical ball very easily. Materials required: Scale Spherical ball 2 wooden blocks Pen and paper Procedure: Keep the ball in between 2 wooden blocks, so that both the wooden block should touch the ball. Keep the scale

Design and Test a Parachute Learn about air resistance while making an awesome parachute! Design one that can fall slowly to the ground before putting it to the test, making modifications as you go. Materials required: A plastic bag or light material Scissors String A small object to act as the weight, a little action

Magic is Science Learn this magic and show your talent to others. Materials required: Bottle (plastic) Water Pin Bucket Procedure: Make 4 to 5 holes at the bottom of the bottle. 2. Make one hole at the neck of the bottle. 3. Fill the bottle with water and close the cap. 4. Put your finger