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Rupinder Brar on Relativity, Einstein, and How to Stay Young
Rupinder Brar lectures on the topic of Einstein's special relativity theory and it's explanation of time dilation and simultaneity. The lecture is entitled Relativity, Einstein, the Speed of Light and How to Stay Young.
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Aftrekken tot 100 met brug
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Werkblad waarmee leerlingen het aftrekken tot 100 met brug inoefenen.


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A Sham Recovery
Interviewed by host Alan Butler, Mark Thornton discusses a wide variety of timely topics.

8.7 Evaluating strategy and presenting outcomes

This stage of the framework focuses on identifying what you have achieved and how well you have achieved it. It involves you in evaluating your strategy and presenting the outcomes of your work. As you evaluate and assess your strategy, identify aspects of your problem-solving skills that you want to develop further. At the end of this stage, use the records in your Skills File to complete the activity ‘Evaluating your problem-solving strategy and presenting outcomes’ and pull together th
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2.3 Multiplying powers

Powers of ten can be used to investigate what happens when two powers of the same number are multiplied together. For example, consider multiplying 10 by 100:

A billion is a thousand million. In terms of powers this is:

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Valley Forge, 1777 (The American Revolution)
When the Continental Army made camp at Valley Forge during the American Revolution, times were tough. The winter was bitter cold, and there was disease and hunger. (01:30)

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4 From DNA to RNA: transcription

In the process of transcription, the information in a gene, i.e. the DNA base sequence, is copied, or transcribed, to form an RNA molecule. RNA is therefore an intermediary in the flow of information from DNA to protein. Before we consider the details of transcription, we will first look at the structure of RNA.

The name ribonucleic acid suggests that RNA is chemically related to DNA. Like DNA, RNA is a chain of nucleotides.

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Learning outcomes

After studying this course, you should be able to:

  • understand some of the ways in which genetic knowledge could affect medical practice, in particular in relation to predictive medicine

  • understand how populations are screened for conditions such as phenylketonuria and whether screening could be used for carriers of recessive genetic disorders such as cystic fibrosis

  • understand how gene chips may be used to screen for large numbers of genes at once,
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#253: Sedimental journey: Probing climate's buried past to predict our future

Paleoclimatologist Prof Jonathan Overpeck describes how research into uncovering the earth’s climate history generates important insights about our climate future. Presented by Dr Shane Huntington.