Posts filed under “Science”

Pendulum Waves

Fifteen uncoupled simple pendulums of monotonically increasing lengths dance together to produce visual traveling waves, standing waves, beating, and (seemingly) random motion.

The period of one complete cycle of the dance is 60 seconds. The length of the longest pendulum has been adjusted so that it executes 51 oscillations in this 60 second period. The length of each successive shorter pendulum is carefully adjusted so that it executes one additional oscillation in this period. Thus, the 15th pendulum (shortest) undergoes 65 oscillations.

For more details see Harvard Natural Sciences Lecture Demonstrations

Our apparatus was built from a design published by Richard Berg [Am J Phys 59(2), 186-187 (1991)] at the University of Maryland.

Category: Science, Video

Capturing video at the speed of light

MIT Media Lab researchers have created a new imaging system that can acquire visual data at a rate of one trillion frames per second. That’s fast enough to produce a slow-motion video of light traveling through objects. Trillion-frame-per-second video (MITNews) Read more: Project website:

Category: Science, Weekend

Ascent: App Commemorating Shuttle for iPad

Pretty interesting concept: > click for app description

Category: Science, Weekend

Astronomers Find Biggest Black Holes Yet

An illustration of a black hole the size of nearly 10 billion Suns. Inside it, where gravity is so in- tense that not even light can escape, our solar system is shown to scale. An artist’s conception of stars moving in the central regions of a giant elliptical galaxy that harbors a black hole. Source:…Read More

Category: Science, Weekend

Stand with Science Today

Visit We encourage everyone–grad students, former grad students, and all other supporters of science–to sign the letter. Tell Congress how important it is to choose cuts carefully and avoid ruining our future while attempting to save it.

Category: Science, Video

Multiverse of Exploration & the Future of Science 2021

Click for ginormous graphic: > Source: A Multiverse of Exploration: The Future of Science 2021 CNN, November 2011

Category: Digital Media, Science, Weekend

Why a Stimulating Job Can Improve Your IQ

Many people think of IQ as a genetic trait like eye color, something you’re born with and stuck with for life. But as Sue Shellenbarger explains on Lunch Break, evidence is mounting that IQ can change over an individual’s lifetime.

11/28/2011 2:26:03 PM

Category: Science, Video

Rover on the Hunt For Life On Mars

Click to enlarge: Source: Mega-Rover Ready To Hunt For Life Signs On Mars New Scientist, November 2011

Category: Science, Technology, Weekend

What Science Lovers Link to Most

Click for interactive chart: Source: Physics or Fashion? What Science Lovers Link to Most Scientific American, November 2011

Category: Philosophy, Science

History of the Sky

This is a year-long time-lapse study of the sky. A camera installed on the roof of the Exploratorium museum in San Francisco captured an image of the sky every 10 seconds. From these images, I created a mosaic of time-lapse movies, each showing a single day. The days are arranged in chronological order. My intent…Read More

Category: Science, Weekend