## How To Add Forces (O Level)

Addition of Forces Since force is a vector quantity, forces can be represented by an arrow diagram. The magnitude of the force is represented by the length of the arrow The direction of the force is represented by the direction in which the arrow is pointed. Resultant Force Resultant force is the combination of 2 or more forces. The effect …

## How To Read A Micrometer Screw Gauge

A quick guide on how to read a micrometer screw gauge. Similar to the way a vernier caliper is read, a micrometer reading contains two parts: the first part is contributed by the main scale on the sleeve the second part is contributed by the rotating vernier scale on the thimble Sponsored Link: Want to play around with a real …

## How To Read A Vernier Caliper

A quick guide on how to read a vernier caliper. A vernier caliper outputs measurement readings in centimetres (cm) and it is precise up to 2 decimal places (E.g. 1.23 cm). Note: The measurement-reading technique described in this post will be similar for vernier calipers which output measurement readings in inches. Measurement Reading Technique For Vernier Caliper In order to …

## Cosmos: A Personal Voyage

Cosmos: A Personal Voyage is a thirteen-part television series written by Carl Sagan, Ann Druyan, and Steven Soter, with Sagan as presenter. I have consolidated the videos available on youtube in this post. Drop me a comment if any of these are unavailable. If you like this series, buy it! On Amazon: Cosmos: Carl Sagan     Episode 1 – …

## A.C. Generator

An alternating current (A.C.) generator is an important application of electromagnetic induction. A.C. generator is an electromagnetic device which transforms mechanical energy into electrical energy. It consists of a rectangular coil of wire which can be rotated about an axis. The coil is located between the poles of two permanent magnets. As the coil rotates, the magnetic field …

## Electrolysis Of Water

When you pass current through water, hydrogen and oxygen will be produced. Pure water is a bad conductor of electricity as it is a covalent compound. To make water conducts electricity, there must be the presence of impurities or ions(e.g. sodium ions). This videos explains how to do electrolysis of water. (Includes some basic chemistry)   Back To Interesting Things

## All Definitions Needed For O Level

This post contains all the important definitions that you need for GCE O Level Physics. (Equivalent to American High School Diploma) If you do not recognise any of the terms listed here, you should proceed to review the respective topic (Click on each of the sub-headers). For a list of the important equations for O Level Physics, please visit O Level …