Another talk that I heard at the ASA meeting a couple of weeks ago was on ‘The Magnitude of God’ by Pamela Bryant. The whole talk was an attempt to comprehend the scale of the universe, from the very large to the very small, along the lines of the video ‘Powers of ten’. The slides are here (60 MB…), complete with references, and are well worth a look.
It often seems that in our search for knowledge we are only limited by the power of our imaginations. Nano scale research and applications are the perfect example of scientists playing with technology that many people in the world use without having a clue how it works. You can buy a 32 Gigabyte micro SD card a few millimetres long that holds 720 hours of movies, but compared to what is already out there our technology looks very clunky indeed. The bacteria E. coli are ten times smaller than the average micro SD card and they compute about a thousand times faster, their memory density is a hundred million times higher and they need only a hundred millionth of the power to operate.
There are some fun details in there too. If you took all the people alive in the world today and removed all the empty space from all the atoms in their bodies, they would fit into a space the size of an apple (originally posted on John Topley’s blog - has anyone checked!?)
Pamela also told some of her story – she is from Texas originally, where she studied chemistry and became a high school teacher. 20 years later she moved back into the lab, completed a PhD in chemistry, and found herself as a postdoc at MIT, doing work on nanomaterials that she said was beyond her wildest dreams. After some time as a postdoc she returned to Howard Payne University in Texas, to give something of her experience back to her students. And Pamela’s own reaction to the torrent of scientific information she delivered in her talk?
‘Humility, wonder and a sober understanding of God’s magnitude.’