Found 20 - 30 results of 42 programs matching keyword "mixing colors to make white light"
While demonstrating how to build an electromechanical digital clock, Jim Newton talks about different kinds of tools—from low-tech, such as a drill press or a welder, to high-tech, such as laser and plasma cutters. Jim is a lifetime maker, veteran BattleBots builder, and former MythBuster. It's geometry! It's knitting! It's—hyperbolic crochet! Artist and science writer Margaret Wertheim shows you how to represent a hyperbolic plane using crochet hooks and yarn. Beginning with a simple crochet chain, learn how to create a geometric shape with a constant negative curvature just by adding stitches. Tinkerer, programmer, and musician Ken Murphy shows how to build electromechanical "bugs" built from scavenged materials and powered with a single coin-cell battery. When the Blinkybug's wire antennae detect motion from air currents or vibrations, the bug comes to life, with its LED eyes blinking in rhythmic patterns. Join Senior Scientist Paul Doherty as he measures the power used by two lightbulbs--one incandescent and one fluorescent--that make the same amount of light. In this zany competition teachers will have ten minutes to create a science activity from a special secret ingredient. This week: crayons! A century after publication of Einstein's famous papers on light and relativity, this most celebrated of Nobel Laureates will be the subject of a talk by award-winning science writer K.C. Cole. She'll discuss the ways in which Einstein continues to influence physics today, from detecting gravity waves to understanding string theory. In this zany competition teachers will have ten minutes to create a science activity from a special St. Patrick's Day secret ingredient-things that are green! The concept of space-time--perhaps Einstein's most fundamental contribution to our understanding of the universe--will be explored using special red lasers. Watch as the best teachers on the planet battle it out for the title of Iron Science Teacher. In this zany competition teachers will have ten minutes to create a science activity. This week’s “secret” ingredient: Milk! How does your eye work? You see the world because light gets into your eyes. Your eye uses that light to make an image of the world inside your eye—just as a camera uses light to make a photograph. At the Exploratorium, we dissect cow eyes to show people how an eye functions, and look at the parts that make up an eye.
This video shows and explains a dissection with one of our staff Explainers.