What now-famous talk did Feynman give to stimulate development in nanotechnology

Question

What now-famous talk did Feynman give to stimulate development in nanotechnology? What year did he give it? What less optimistic topic did some of those in the audience suspect was meant by the title of Feynman's talk? Many computers use one byte (8 bits) of data for each letter of the alphabet. There are 44 million words in the Encyclopedia Britannica. What is the bit density (bits/in^2) of the head of a pin if the entire encyclopedia is printed on it? Assume the average word is five letters long. What is the byte density? What is the area of a single bit in nm^2? A CD-ROM has a storage density of 46 megabytes/in^2. and a DVD has a storage density of 329 megabytes/in^2. Is the pinhead better or worse than these two-storage media? Flow mu Ch better or worse? What is meant by "gray goo"? For a gray goo scenario to play out, what entirely new type of machine would be necessary? What year was the word "nanotechnology" first used? A baseball is made of trillions of trillions of atoms. Write out the number for one trillion. NASA estimates that there are about 10^21 stars in the universe. Is this number higher or lower than the number of atoms in a baseball? The distance between the nuclei of two iron atoms is about 4 A (1 A = 10^-10 m). How many nanometers is that? How many iron atoms at this spacing would it take to reach 2 mu m (1 mu m = 10^-6 m)? What five categories are the most popular areas for nanotechnology patents in the United States?

Explanation / Answer

1.13  1959

1.16 The term refers to a disaster scenario in nanotechnologyapplications.Grey goo is a hypothetical end-of-the-world scenario involving molecular nanotechnology in which out-of-control self-replicating robots or tiny machines called assemblers consume all matter on Earth while building more of themselves. Assemblers would begin to convert all organic matter into more assemblers, consuming everything in the process. The Earth would be reduced to a lifeless mass teeming with nanomachines.

1.18 1981

1.20 0.4 nano metre

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