maroun younan

1. Analyse why red sunsets can sometimes be more impressive when there is more dust or pollution in the air than usual. If there were no scattering, and all of the light travelled straight from the sun to the earth, the sky would look dark as it

Does at night.

1. Describe what happens inside water droplets to cause a rainbow and explain how you can tell whether a rainbow is a primary or secondary.

A water droplet cause rainbows to happen by basically light entering the water droplet and then bounces around inside, and then leaves the water droplet. At certain angles relative to the incoming light rays, the light becomes focused this is the rainbow that you see. The difference in the index of refraction of different wavelengths of light causes the slight separation of colors so that you see a rainbow

JOURNAL ENTRY WEEK 2

Investigate the two types of sight defect- long-sightedness and short sightedness.

Find the following information:

1. what causes the defect: things that cause the defect might be birth that a baby comes from there parents.

2. the symptoms displayed

3. propose what sort of lens may be used to correct each vision.\

4. A convex lensmay be used for the correct vision.

Fibre optic technology offers many advantages when used in medical applications.

a.     Describe how optical fibre may be used in medical applications

A doctor uses optical fibre in medical application to see a person digestive system and inside his stomach and its like a camera which takes a photo of it.

b.     Identify the traditional medical techniques that optical fibres might replace

Optical fibres may replace copper wire.

c.     Evaluate the benefits of fibre optic technology to medicine

The benefits is that it is cheap good to buy, thinner more durable as in they carry more information and are better then copper wire.