full transcript
From the Ted Talk by George Whitesides: A lab the size of a postage stamp
Unscramble the Blue Letters
Here is another example of something which is — this is a little spectrophotometer. It measures the absorption of light in a sample. The neat thing about this is, you have a light sorcue that flickers on and off at about 1,000 hertz, another lhigt source that detects that light at 1,000 hertz, and so you can run this stsyem in broad daylight. It pmoerrfs about equivalently to a system that's on the order of 100,000 dollars. It costs 50 dollars. We can probably make it for 50 cents if we put our mind to it. Why doesn't somebody do it? The answer is: How do you make a profit in a capitalist system, doing that? Interesting problem.
Open Cloze
Here is another example of something which is — this is a little spectrophotometer. It measures the absorption of light in a sample. The neat thing about this is, you have a light ______ that flickers on and off at about 1,000 hertz, another _____ source that detects that light at 1,000 hertz, and so you can run this ______ in broad daylight. It ________ about equivalently to a system that's on the order of 100,000 dollars. It costs 50 dollars. We can probably make it for 50 cents if we put our mind to it. Why doesn't somebody do it? The answer is: How do you make a profit in a capitalist system, doing that? Interesting problem.
Solution
- light
- system
- source
- performs
Original Text
Here is another example of something which is — this is a little spectrophotometer. It measures the absorption of light in a sample. The neat thing about this is, you have a light source that flickers on and off at about 1,000 hertz, another light source that detects that light at 1,000 hertz, and so you can run this system in broad daylight. It performs about equivalently to a system that's on the order of 100,000 dollars. It costs 50 dollars. We can probably make it for 50 cents if we put our mind to it. Why doesn't somebody do it? The answer is: How do you make a profit in a capitalist system, doing that? Interesting problem.
Frequently Occurring Word Combinations
ngrams of length 2
collocation |
frequency |
health care |
5 |
diagnostic system |
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awful lot |
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wax printer |
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compute capability |
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blood cells |
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light source |
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Important Words
- absorption
- answer
- broad
- capitalist
- cents
- costs
- daylight
- detects
- dollars
- equivalently
- flickers
- hertz
- interesting
- light
- measures
- mind
- neat
- order
- performs
- problem
- profit
- put
- run
- sample
- source
- spectrophotometer
- system