EXPLO.TV - Webcasts, Video Clips, and Podcasts from the Exploratorium

Reflections: Walk Away from the Mirror (Clip)

Running Time:
00:00:59

Exhibit developer Erik Thogersen backs away from the Giant Mirror. Watch his image change as he passes through the focal point, then continues on past the center of curvature.

Project: Reflections | Browse All

Date: September 9, 2009
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): General Science, Physics

Keywords: mirror, reflection, focus, curvature, exhibit

Reflections: Framing the Real Thing (Clip)

Running Time:
00:04:53

At the Giant Mirror, Senior Staff Scientist Paul Doherty demonstrates a simple way of locating a real image—an image that floats in space in front of the mirror.

Project: Reflections | Browse All

Date: September 9, 2009
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): General Science, Physics

Keywords: mirror, reflection, focus, curvature, exhibit, real, virtual

AfterSchool Activities: Color Chromatography Activity: Introduction (Clip)

Running Time:
00:01:12

An introduction to an activity that lets you discover the secret colors hidden in black ink. With a paper towel, a black marker, and a cup of water, create a rainbow of colors while exploring capillary action and chromatography.

Project: AfterSchool Activities | Browse All

Date: September 9, 2009
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): General Science, Chemistry

Keywords: chromatography, capillary action, ink, color, art, afterschool

Links:	Download activity instructions
	Download concept map
	Going further

AfterSchool Activities: Color Chromatography Activity: What's Going On (Clip)

Running Time:
00:01:33

Explore the science behind this activity, including capillary action (how the water moves up the paper) and chromatography, or how different elements of the ink are carried along at different rates, allowing you to see that black ink is actually made up of many different colors.

Project: AfterSchool Activities | Browse All

Date: September 9, 2009
Format: Expedition
Category: Everyday Science
Subject(s): Chemistry, General Science

Keywords: chromatography, capillary action, ink, color, art, afterschool

Links:	Download activity instructions
	Download concept map
	Going further

Reflections: Testing the Giant Mirror's Sphericity (Clip)

Running Time:
00:04:49

Senior Staff Scientist Thomas Humphrey invents a simple experiment to see if the Giant Mirror is spherical or parabolic, and then to see if it's perfectly spherical. By placing a Styrofoam ball at the center of curvature, he's able to prove that the mirror is out of pure sphericity by about one-quarter of one degree.

Project: Reflections | Browse All

Date: September 7, 2009
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): General Science, Physics

Keywords: mirror, reflection, focus, curvature, exhibit, sphere, experiment

Reflections: Reflections of Infrared Radiation (Clip)

Running Time:
00:04:37

Staff Neuroscientist Richard Brown demonstrates that the Giant Mirror reflects infrared radiation as well as visible light.

Project: Reflections | Browse All

Date: September 5, 2009
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): General Science, Physics

Keywords: mirror, reflection, exhibit, light, heat, experiment

Exploratorium Audio Salon: Laura Peticolas: Sonification of the Solar Winds (Podcast)

Running Time:
00:21:06

Dr. Laura Peticolas is a physicist at UC Berkeley's Space Physics Research group. She studies the Aurora to learn more about the Earth and the workings of our Solar System. She's currently working with NASA's Mars data to understand why the Martian aurora looks the way it does. In this podcast she discusses her research, her inspiration and how and why scientists sonify data.

Project: Exploratorium Audio Salon | Browse All

Date: September 3, 2009
Format: Interview
Category: Popular Science
Subject(s): physics, astronomy

Keywords: laura peticolas, sonification, mars, physics, solar wind, nasa, auroras, audio salon

Alternative content

download MP3 (29 MB)

Science Teaching Tips: Private Theories (Podcast)

Running Time:
00:06:50

Students may come into your classroom with preconceived ideas about how things work. TI director Linda Shore explains why she feels it’s important to explore students’ private theories about the world, and some ways she’s found to do that in her own classrooms.

Project: Teacher Institute Science Teaching Tips | Browse All

Date: September 2, 2009
Format: Interview
Category: Everyday Science
Subject(s):

Keywords: classroom, teach, preconceived

Links:

A Private Universe (from Annenburg Media)

Alternative content

download MP3 (2.8 MB)

AfterSchool Activities: Ice Balloons Activity: Introduction (Clip)

Running Time:
00:00:25

An introduction to the Ice Balloons activity, in which learners explore globes of frozen water and learn how to ask and then answer 'investigable' questions.

Project: AfterSchool Activities | Browse All

Date: September 2, 2009
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): General Science

Keywords: ice, water. inquiry, questioning, investigable questions, experiment, observing, density, temperature, thermal conductivity, center of mass, freezing point depression, heat capacity, water vapor, states of water, states of ice, afterschool

Links:	Download activity instructions
	Download concept map
	Going further

AfterSchool Activities: Ice Balloons Activity: Step-by-Step Demonstration (Clip)

Running Time:
00:07:39

A detailed demonstration of how to do the Ice Balloons activity, including a discussion of materials needed and strategies for getting learners to ask and then investigate questions about what they are seeing.

Project: AfterSchool Activities | Browse All

Date: September 2, 2009
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): General Science

Keywords: ice, water. inquiry, questioning, investigable questions, experiment, observing, density, temperature, thermal conductivity, center of mass, freezing point depression, heat capacity, water vapor, states of water, states of ice, afterschool

Links:	Download activity instructions
	Download concept map
	Going further


		Streaming Technology provided by: Digital Rapids	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).