Showing posts with label relativity. Show all posts
Showing posts with label relativity. Show all posts

Sunday, October 5, 2014

HBO is Showing "Einstein and Eddington" Now


In 2008, the BBC made a biopic (or dramatization) of events in Albert Einstein's and Arthur Eddington's life and work, and how they intersected. It was cosponsored by HBO and I just found out that HBO is currently showing this film (you can see it in the "On Demand" section of your cable TV offerings if you subscribe to HBO.) It may not last long, and it is not available on DVD yet in the U.S.

I recommend it with some enthusiasm (it's moving, and fun to watch), but also many reservations (the science and history are not always accurate, or -- to be charitable -- are twisted or changed in the interests of higher drama.)

I think everyone has heard of Einstein, but Arthur Eddington was an astronomer and physicist in England in the early part of the 20th century who contributed a lot to our understanding of how stars work. He was also a key member of the eclipse expedition in 1919 that tested if Einstein's crazy new theory of gravity, space, and time -- the general theory of relativity -- was correct. Measurements during that eclipse, and especially during a later eclipse made by a team from the Lick Observatory, established that Einstein was right and that the universe was more complex and beautiful in its inner workings than earlier scientists had imagined.

The film begins and ends around the eclipse expedition, but then goes back in time to set the scene. Many historical details are wrong or skipped over -- Elsa was divorced with two kids when she re-encountered Einstein in Berlin, the famous image of Einstein sticking out his tongue was later in his life, Eddington didn't have to tell Einstein about Mercury, etc. But such details don't matter to most viewers, and sometimes mixing things up a bit helps move the story along. And the flavor of the excitement around relativity is well characterized, with the two main actors doing a nice job in portraying the scientists and their personalities.

If you get HBO, or have a friend who does, and have a chance to see it, I recommend the film for everyone except historians of 20th century science, who will have a fit about those details. (The same production team also did a biopic about Stephen Hawking, called just "Hawking" and I gather you can find that film in segments on YouTube.)


Above you see the two scientists as portrayed in the movie, below you see the two of them from real life.
(For movie and TV fans, I can't resist adding: Gollum plays Einstein, Dr. Who plays Eddington.)



Saturday, March 15, 2014

Happy Belated Einstein's Birthday (Get Ready for Spring)


Yesterday was Albert Einstein's birthday and this coming Thursday will be the Spring Equinox, when the length of the day and the length of the night are roughly equal, and we move from winter to spring in the Earth's northern hemisphere. This is always a good time of year to think fresh thoughts, something Einstein was especially good at.

At Foothill College, where I have the privilege of teaching, this is the week we begin registering students and community members for our spring quarter, which starts in April. This spring, I get to teach my evening Physics 12 class, nicknamed "Everything You've Wanted to Know about Einstein and his Work (without Math) but Were Afraid to Ask..."

If you, or someone you know, might be interested and are close enough to Los Altos, California to come to an evening class, I invite you to check it out.

Although Einstein died in 1955, his work continues to capture the imagination of both scientists and the public. In the last few years, astronomers have found new confirmation of some of Einstein’s most bizarre ideas -- including time itself slowing down under the right circumstances and gravity acting like the distorting mirrors of an amusement park. Huge black holes have been found, some of them having “eaten” enough material to make billions of Suns.

In the Physics 12 course, we explain all these ideas and discoveries in everyday language -- using analogies, visuals, and humor instead of math. Physics 12 will be offered on Tuesday and Thursday evenings from 6 to 8:30 pm, April 8 to June 24, 2014. Pre-registration is advised, but, if there is room, you can come hear the first lecture (room 5015) and then register if you like the approach. The class is held on the main campus of Foothill College in Los Altos Hills, just off Freeway 280. (For adults who don't need a grade, arrangements can be made, after you register, to take the course without the exams.)

For registration information for the Spring Quarter see:
http://www.foothill.edu/admissions.php

Physics 12 emphasizes key ideas that form the basis of our modern concepts of space, time, matter, and energy:
* The theory of how atoms work
* Energy, heat, and the arrow of time
* The special theory of relativity: what happens when you travel close to the speed of light
* The general theory of relativity: gravity, space-time warps, and black holes
* Quantum mechanics: the bizarre rules that govern the world inside the atom

In addition to examining the physics and physicists involved with these areas, the course also takes a brief look at the effects that such physics ideas have had on the humanities -- including poetry, fiction, music, and the public view of scientists. The quarter concludes the course with a non-technical introduction to the work of Stephen Hawking, whose innovative ideas combine these areas and take some of Einstein's ideas to the outermost limits of cosmic possibility.

For a course syllabus in pdf format, see:www.foothill.edu/physics/Physics.12.Web.pdf