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...Simple. To save money. Small windows in new homes are a real concern for Professor Foster who, for more than 25 years, has studied how a low lux or light level can effect our internal body clock. Prof Russell Foster Outside light is incredibly bright. Even in a cloudy day in London, you’ve probably got 20,000, 30,000 lux. The equivalent in your home would be 200 to 300...

...simple-looking tables. Fortunately, for our purposes, we do not need to resolve this point, so we shall continue to refer to the table as a reciprocal table. Secondly, the Babylonians were quite able to divide by numbers other than regular ones, and approximated the results to three or four sexagesimal places. There are reciprocal tables for complete sequences of numbers...

...simple process to convert one measurement into another. For now we will focus on what is known as the metric system of measurement (we will look at some units from the imperial system later on in the session). In most cases, if you want to convert between units in the metric system you will just need to multiply or divide by 10, 100 or 1000. Take a look at the diagrams...

...simple analysis of the molecular make up, the course moves on to look at the importance of protein and how they are digested and absorbed...This free course, Gene testing, looks at three different uses of genetic testing: pre-natal diagnosis, childhood testing and adult testing. Such tests provide genetic information in the form of a predictive diagnosis, and as such are...