How To Make Pulse Counter The rhythmical dilation of arteries produced when blood is pumped outward by regular contractions of the heart, especially as palpated at the wrist or in the neck. The pulse is usually felt just inside the wrist below the thumb by placing two or three fingers lightly upon the radial…
Hot Air or Cold: Which Is Heavier? In this experiment you will learn about air motion, how Hot air rises and you will get answer why cold air is much heavier than warm air. Material: Wooden roller. Thread. Empty can Empty baby bottle Candle Method: Balance an “empty” baby bottle on one end of your yardstick…
When a drop of wax falls down on one side, the candle looses its balance and preponderates to the other side. There the flame grazes the candle, so that a drop of wax falls down also on this side. Candle looses its balance again and preponderates back again. So the candle swings until it runs…
How to make a lemon battery A lemon battery is made with lemon and two metallic such as copper and zinc. Copper and zinc work well together with lemon to make lemon battery because lemon contain citric acid similarly Tomatoes and other citrus fruits contain enough acid to effect the galvanometer. How to make a lemon…
This article about hovercraft working and construction of simple hovercraft and its has also video tutorial about its working. Objective In this experiment you will test if different volumes of air will cause a balloon powered hovercraft to travel for longer periods of time. Introduction A hovercraft is a vehicle that glides over a smooth…
How to make an Electroscope How to making of an Electroscope : The electroscope is an easy-to-make device and should not be difficult to assemble for students who are motivated. They can use it to demonstrate the presence of an electrostatic charge in a comb, a balloon, or other charged object. As the charged object…