Browsing 20 - 30 results of 1293 programs


Everything Matters: Tales from the Periodic Table:  Sodium: Ron Hipschman (Clip)
Running Time:
00:38:13
Essential, explosive sodium is a soft, silvery alkali metal that roils in water, releasing clouds of hydrogen gas that fan its yellow flames. It reacts with most elements, and is naturally found only in compounds, such as sodium chloride, or common salt. Ancient Egyptians knew sodium from natron, a mix of salts prized for cleaning, personal hygiene, and preservation, particularly in mummification. Humphry Davy first isolated the element from caustic soda in 1807, naming it sodium; Jakob Berzelius preferred natrium, hence its symbol (Na). As a metal, liquid sodium cools nuclear reactors, and sodium-vapor lamps bathe streets at night in yellow, monochromatic light.

Project: Everything Matters: Tales from the Periodic Table | Browse All

Date: February 25, 2016
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): chemistry

Keywords: ron hipschman, sodium, salt, everything matters


Solar Eclipse:  Why Don't We Have an Eclipse Every Month? (Clip)
Running Time:
00:01:54
In this video, Exploratorium Senior Scientist Paul Doherty explains why we don't have a total solar eclipse every month. A total solar eclipse happens when the moon crosses between the sun and Earth and casts its shadow onto our planet. But the orbit of the moon is tilted relative to the orbit of the Earth around the sun, so the moon often passes below or above Earth. At those times, it does not cross the line between the sun and the Earth, and therefore does not create a solar eclipse. There are just two times a year in the Earth's orbit when there is a possibility of a total solar eclipse.

Project: Solar Eclipse: Stories from the Path of Totality | Browse All

Date: February 24, 2016
Format: Expedition
Category: Everyday Science
Subject(s): General Science

Keywords:


Solar Eclipse:  What is a Solar Eclipse? (Clip)
Running Time:
00:03:45
Join Exploratorium astronomer Isabel Hawkins, and Exploratorium educator Liliana Blanco as they explain the celestial mechanics of a total solar eclipse. Through demonstrations, they show how the moon, sun, and Earth align to create the cosmic coincidence that we see as a total solar eclipse.

Project: Solar Eclipse: Stories from the Path of Totality | Browse All

Date: February 23, 2016
Format: Expedition
Category: Everyday Science
Subject(s): Physics, General Science, Astronomy/Space Science

Keywords:


Solar Eclipse:  Why Woleai? (Clip)
Running Time:
00:02:25
The Exploratorium is sending a production crew thousands of miles by plane and by boat to Woleai, Micronesia, to broadcast a solar eclipse live to the world. Many factors went into choosing a destination for the broadcast. Executive Producer Robyn Higdon looked along the path of totality for this eclipse, which will start in Indonesia and sweep across the Pacific Ocean, to find a location with good weather predictions and solid land for setting up the telescopes. The Woleai Atoll in Micronesia was the perfect choice. Tune in on March 8th at 5:00 p.m. PST to watch the live broadcast!

Project: Solar Eclipse: Stories from the Path of Totality | Browse All

Date: February 22, 2016
Format: Expedition
Category: Everyday Science
Subject(s): General Science

Keywords:


Solar Eclipse:  Hands-On Safe Viewing Techniques (Clip)
Running Time:
00:00:42
Learn how to cast images of the sun using nothing more than a piece of paper and your hands!

Project: Solar Eclipse: Stories from the Path of Totality | Browse All

Date: February 12, 2016
Format: Demonstration / Activity
Category: Science in Action
Subject(s): Astronomy/Space Science

Keywords: eclipse, sun, diy, hands-on learning, activity, solar viewer


Solar Eclipse:  How to Build a Sun Viewer (Clip)
Running Time:
00:01:45
Check out this D.I.Y. video on how to build your own sun viewer using items that you may have lying around your house. All you need is a pair of binoculars, a tripod, and a large piece of white paper or fabric to project the solar image onto. This is the method used by Galileo himself!

Project: Solar Eclipse: Stories from the Path of Totality | Browse All

Date: February 10, 2016
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): Astronomy/Space Science

Keywords:


Solar Eclipse:  Safe Viewing Techniques (Clip)
Running Time:
00:01:49
There are many ways that you can safely enjoy a partial or total solar eclipse using items from around your house! Dr. Paul Doherty will show you a few of the easiest methods for safe solar viewing.

Project: Solar Eclipse: Stories from the Path of Totality | Browse All

Date: February 9, 2016
Format: Expedition
Category: Everyday Science
Subject(s): Astronomy/Space Science

Keywords: eclipse


Everything Matters: Tales from the Periodic Table:  Neon: Ron Hipschman (Clip)
Running Time:
00:32:10
Neon is normally odorless and colorless, reacting with no one, not even itself. Abundant in the universe, uncommon on Earth, it drifts aloof from any bond. When isolated by Sir William Ramsay and Morris Travers inside a vacuum tube in 1898, the noble gas betrayed its excitement in brilliant red. That excitement, glowing within Georges Claudes ingeniously curved lamps since 1923, has captured our imaginations ever since.

Project: Everything Matters: Tales from the Periodic Table | Browse All

Date: February 4, 2016
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): Art, Chemistry, General Science

Keywords: neon, ron hipschman, everything matters


Solar Eclipse:  How to view a Solar Eclipse | Eyeball Safety (Clip)
Running Time:
00:01:02
Dr. Paul Doherty will give you a demonstration on how the sun can burn a hole in your retina if you don't take the proper procausions when viewing a Solar Eclipse. Remember: Never look directly at the sun, even during a Partial Eclipse! To learn more about eclipses and safe viewing techniques, check out the various articles and videos on our Eclipse website. http://www.exploratorium.edu/eclipse/

Project: Solar Eclipse: Stories from the Path of Totality | Browse All

Date: February 3, 2016
Format: Demonstration / Activity
Category: Science in Action
Subject(s): Astronomy/Space Science

Keywords: eclipse, total solar eclipse, telescope, safety


Arts at the Exploratorium:  Bosun's Bass by Tim Hawkison (Clip)
Running Time:
00:03:17
Artist Tim Hawkinson is celebrated for his idiosyncratic, imaginative artworks that re-purpose everyday materials in inventive sculptural constructions that simultaneously confound and delight. Hawkinson has collaborated with the Center for Art and Inquiry and the Studio for Public Spaces to create the third installment of our adventurous Over the Water series of large-scale artworks for the civic space at Pier 15. Bosuns Bass is a tide-activated sound work inspired by the bosun's call, the high-pitched whistle used by mariners to give commands that can be heard over the roar of the sea. Evoking the eerie sounds of San Franciscos maritime past, Hawkinsons whimsical work employs elements of everyday transportationshipping container, bus bellows, bicycleto create a bass bosun's whistle, which is tuned three octaves lower than the traditional instrument. The shipping container, pitched vertically and installed over a hole in the deck of Pier 15, provides the lungs of the system. Tidal waters rise and fall in the container, compressing air and pushing it up into a giant bellows mounted above. The bellows, reclaimed from the pleated section of an articulated Muni bus, provides a steady source of pressurized air, which moves through a hose to the bicycle frame and there blows the bosuns pipe. The airflow is controlled by a series of valves, levers, and other mechanisms that emulate a bosuns hand and mouth motions to produce different sounds in the whistle. Cued by patterns cut into the tread of the bike's rear wheel, the bass bosun's pipe plays 21 different traditional calls including "Attention," "Carry On," "Swab the Deck," and "Pipe Down.

Project: Arts at the Exploratorium | Browse All

Date: February 3, 2016
Format: Exhibit
Category: Everyday Science
Subject(s): General Science

Keywords:


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Gordon and Betty Moore Foundation
Gordon and Betty Moore Foundation
Webcasts made possible through the generosity of the Gordon and Betty Moore Foundation, The Jim Clark Endowment for Internet Education, the McBean Family Foundation,.and the Corporation for Educational Networks Initiatives in California (CENIC).

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