Category: Physics AS

Focus Length Of a Convex Lens: 1/V = 1/U +1/F

The focal length for convex lenses never changes with it being on the power of the lens. A convex is lens is thicker the further to the centre of the lens. Due to light travelling slower through glass, it forces the light waves to bend on the top and …

Bits, Bytes and Binary Codes

All images and every digital sounds are made from ‘0’s and ‘1’s. Each one of these digits is called a binary digit. Each binary digit is 1 bit. 8 bits make up a byte. Confused? Well don’t worry, that’s what bits, bytes and binary codes are in the …

Electromagnetic Spectrum – Different Kinds of Images and Resolutions

Below are examples of different kinds of images along the electromagnetic spectrum. Infrared, x-rays, radio waves, ultraviolet, ultrasound and even down to the atomic level, there are examples of all different types of images with estimations of the resolutions worked out as well. If you don’t know how to work …

[How to] Calculate Resolution Of An Image

In Physics AS, it is important to know how to work out the resolution of a given image. The resolution is… The size, in real life, of one pixel or real life length / no. of pixels For this reason, it is usually measured in metres per pixel. …