Next up in the Top Eleven is an experiment whose basic technique is still in use today. Who: Henry Cavendish (1731-1810), a British scientist who made a number of discoveries in physics and chemistry, but received credit for very few of them. When: 1797. What: Cavendish’s modern claim to fame is the torsion pendulum experiment,… Continue reading Top Eleven: Henry Cavendish
Category: Experiment
Top Eleven: Isaac Newton
Third in the Top Eleven is Sir Isaac Newton, who squeaks in with two nominations for two different experiments. Who: Isaac Newton (1642-1727), famous English physicist, mathematician, alchemist, Master of the Mint, and Neal Stephenson character. When: Newton was secretive and reluctant to publish anything, so it’s sort of hard to assign dates. I’m going… Continue reading Top Eleven: Isaac Newton
Top Eleven: Ole Roemer
The second in the Top Eleven is the first quantitative measurement of the speed of light, by Ole Christensen Roemer (whose last name ought to contain an o-with-a-slash-through-it, that I’ve rendered as an “oe”). Who: Ole Roemer (1644-1710), a Danish astronomer. When: The crucial observations were made around 1675. What: Roemer made careful observations of… Continue reading Top Eleven: Ole Roemer
Top Eleven: Galileo Galilei
The first and oldest of the experiments in the Top Eleven is actually a two-fer: Galileo Galilei is nominated both for the discovery of the moons of Jupiter, and for his experiments on the motion of falling objects. Who: Galileo Galilei (1564-1642), the great Italian physicist, astronomer, and general Renaissance man. When: He’s known to… Continue reading Top Eleven: Galileo Galilei
Great Experiments: Top Eleven
Evil elves have apparently snuck into the house in the middle of the night, and stuffed my sinuses with cotton and motor oil (the dog is sitting here muttering “I told you there were evil elves out there but did you listen? ‘Stop barking at nothing,’ you said…” Or maybe that’s the drugs.). This sort… Continue reading Great Experiments: Top Eleven
What It Takes
In the ongoing string theory comment thread (which, by the way, I’m really happy to see), “Who” steps off first to ask an interesting question: One way to give operational meaning to a theory being predictive in the sense of being empirically testable is to ask What future experimental result would cause you to reject… Continue reading What It Takes
Get Out the Vote
Today is the last day to vote in Cosmic Variance’s Greatest Physics Paper contest. If you haven’t voted yet, go over there and pick a paper. Locally, I’m still collecting nominees for the Greatest Physics Experiment. A quick scan through the comments gives the current list as: The Michelson-Morley experiment disproving the aether. Rutherford’s discovery… Continue reading Get Out the Vote
Libertopia Approaches?
The big news in physics yesterday was the announcement that a private donation has been made to support experiments at the Relativistic Heavy Ion Collider on Long Island. This is the accelerator that’s slamming gold nuclei into each other to create a quark-gluon plasma, along with a million dippy stories about how it might make… Continue reading Libertopia Approaches?
Future Great Experiments
Looking at the ScienceBlogs front page, I suspect that I may be well out of my league, especially when it comes to posting frequency. There’s just no way I can post that many entries in one day, especially not a day like Thursday. In addition to my lab this morning (in which half the students… Continue reading Future Great Experiments
Greatest. Experiment. EVER.
Quite a while back, Clifford Johnson at Cosmic Variance had a post seeking nominations for “The Greatest Physics Paper Ever.” Back after a long hiatus, he’s now holding a vote among five finalists: Isaac Newton’s Principia Mathematica, Albert Einstein’s General Relativity, Emmy Noether’s paper on symmetry and conservation laws, Dirac’s theory of the electron, and… Continue reading Greatest. Experiment. EVER.