By Peter Freund
This attention-grabbing ebook assembles human tales approximately physicists and mathematicians. Remarkably, those tales cluster round a few basic topics having to do with the interplay among scientists, and with the influence of old occasions resembling the arrival of fascism and communism within the 20th century on scientists habit. in short, yet lucidly, the various appealing technological know-how that introduced those scientists jointly within the first position is defined
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Around midnight we gave up and went to our rooms. I remember Feynman’s face when we said goodnight, I also seem to remember some unprintable words that were spoken. The next day Feynman was scheduled to lecture on another topic. He could easily have avoided any reference to the previous day’s confrontation. Instead, barely did he get going, when he brought the matter up. “Yesterday, Ms. Farrar remarked that my claim about measuring the quark charges was wrong. I made light of her remark, but after my talk she explained her point to me in detail.
We no longer have calculable paths. If we had a calculable path, then knowing when and where the particle got started and when and where it arrived, we could figure out where it had been all along the way. Now, after summing over all histories, all we can predict is this probability of finding the particle at some point of arrival at the time of arrival, if we know when and where the particle got started. There is such a probability for any point accessible to the particle and the only thing we can be sure of is that the particle will be somewhere, so all these probabilities for it arriving at all these points have to add up to the probability of certainty, which equals one.
Euler, Poisson, D’Alembert, Fourier, Lagrange, Gauss, Laplace, Hamilton and Jacobi were all both leading theoreticians and leading mathematicians. What did they produce in physics? Lagrange, Hamilton, and Jacobi, for instance, gave mathematically brilliant novel approaches to Newton’s mechanics. Now, a pure experimentalist of that period, someone like Ørsted or Ohm would probably have dismissed their work as pure mathematics, for to tackle any mechanics problem, the good old Newton equations were all you needed.
A Passion for Discovery by Peter Freund