Found 0 - 10 results of 22 programs matching keyword "gravity lenses"


Science in the City:  Camera Obscura (Clip)
Running Time:
00:04:05
On the cliffs above San Francisco's Ocean Beach perches a landmark observatory—a giant camera obscura. Step inside with Robert Tacchetto and see how this centuries-old technology creates enchanting images of the outside world.

Project: Science in the City | Browse All

Date: July 11, 2012
Format: Expedition
Category: Everyday Science
Subject(s): General Science

Keywords: camera obscura, san francisco, ocean beach, pinhole camera, concave table, exploratorium, natural lenses, science in the city


Science Teaching Tips:  Take It from the Top (Podcast)
Running Time:
00:06:28
A stack of blocks seems to defy gravity in this activity by Exploratorium staff educator Don Rathjen.

Project: Teacher Institute Science Teaching Tips | Browse All

Date: November 11, 2009
Format: Interview
Category: Everyday Science
Subject(s):

Keywords: blocks, gravity

Links: Take It from the Top activity
More of Don Rathjen’s activities

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Ice Stories:  Shedding Light on Dark Energy (Clip)
Running Time:
00:03:24
What is dark energy? Cosmologist Rocky Kolb explains how the South Pole Telescope will help us understand the properties and nature of this mysterious force.

Project: Ice Stories: Dispatches from Polar Scientists | Browse All

Date: December 7, 2007
Format: Interview
Category: Science in Action
Subject(s): Astronomy/Space Science, Physics

Keywords: dark energy, astronomy, astrophysics, cosmology, universe, space, time, expanding, south pole telescope, galaxy clusters, gravity


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Windows Media: 1128K  
The Nobel Prize: 100 Years of Creativity:  From Special Relativity to String Theory: How Einstein Turned Physics into (Webcast)
Running Time:
00:48:31
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.

Project: The Nobel Prize: 100 Years of Creativity | Browse All

Date: June 28, 2006
Format: Interview
Category: Popular Science
Subject(s): Physics

Keywords: k.c. cole, symmetry, transpositional symmetries, speed of light, relativity, gravity lenses, gravity bending light, string theory


Real: 45K  

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Iron Science Teacher:  Clothespins (Webcast)
Running Time:
1:00:13
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: Clothespins!

Project: Iron Science Teacher | Browse All

Date: July 8, 2005
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): General Science, Physics

Keywords: teachers, experiments, demos, contest, activities, center of gravity, balance, balance beam, weights and measures, inertia, soda bottle launchers, projectile motion, impulse, muscles, clothespin workout activity,


Real: 225K  
Saturn:  How Far Have We Gone? (Webcast)
Running Time:
00:46:28
After a week of analyzing the data from the Huygens probe, do scientists think of Titan differently? What were the unexpected findings? Which hypotheses were wrong? Which were correct? Join us as we talk to mission scientists at NASA's Jet Propulsion Laboratory and get the latest on this enigmatic moon.

Project: Saturn: Jewel of the Solar System | Browse All

Date: January 22, 2005
Format: Demonstration / Activity
Category: Science in Action
Subject(s): Astronomy/Space Science

Keywords: titan, atmosphere of titan, cassini spacecraft, gravity on titan demonstration, ice balloon activity, weathering, surface erosion, dendridic rivers, sounds of titan


Real: 225K  
Iron Science Teacher:  Holiday Edition: Fruitcake (Webcast)
Running Time:
00:53:29
The only thing to beat out Iron Science Halloween! Holiday madness right when you could use a laugh.... today's secret ingredient: fruitcake!

Project: Iron Science Teacher | Browse All

Date: December 17, 2004
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): General Science

Keywords: teachers, experiments, demos, circumference, diameter, pi, turning fruitcake into pi, diarrhoea, fiber, constipation, measuring density, mass, volume, weight, gravity.laws of gravity, rocket fuel


Real: 225K  
Saturn:  Saturn/Cassini Update: Looking Back at Saturn (Webcast)
Running Time:
00:27:05
Real: 225K  
Iron Science Teacher:  Salt (Webcast)
Running Time:
1:09:46
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. Tee off with this week’s “secret” ingredient-salt!

Project: Iron Science Teacher | Browse All

Date: July 23, 2004
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): General Science, Physics

Keywords: teachers, experiments, salt shaker, center of gravity, balance, table salt, sodium chloride crsytal, exponentials, diapers, osmosis, solutions, perception of taste, dna strands, cell membrane, cell structure, dna extraction


Real: 225K  
Iron Science Teacher:  Aluminum Cans (Webcast)
Running Time:
1:02:33
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-aluminum cans!

Project: Iron Science Teacher | Browse All

Date: July 16, 2004
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): General Science, Physics

Keywords: teachers, demos, experiments, activities, bouyancy, volume, density, balance, center of gravity, vaccuum, condensation, change of state, air pressure


Real: 225K  
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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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