With cd it collins

Unit 5

Gadgets

Track 06
The pinhole camera is a very simple device. It consists of a cylinder with a radius of approximately 4 cm and a height of 12 cm. There is a small hole 1 mm in diameter positioned halfway up the wall of the cylinder. A sheet of photographic paper 18 cm in width curves round the inside of the cylinder leaving a gap of about 1 cm just behind the pinhole. The camera is very simple to use, but it takes a long time to produce a picture. If you fix the camera outside and expose it to the light, after a few minutes, you will find that an image has appeared on the photographic paper.
Track 07

1. 
   You may need to adjust the volume of the microphone so that we can hear you at the back of the room.
   
2. 
   If we launch the game in January, we're unlikely to maximize sales.
   
3. 
   These types of comments reinforce the notion that the unemployed don't want to work.
   
4. 
   After lengthy negotiations, the contractor was able to secure a good deal.
   
5. 
   The organization has suspended operations until more money becomes available.
   

Track 08 Lisa:	OK, as I understand it, we've got to build a device that will allow us to convey a ping-pong ball from one table to another a metre away. Bill, what have we got?
Bill: