Friday, 19 July 2013 12:44
E2-22 UMBRA AND PENUMBRA
Additional Info
- ID Code: E2-22
- Purpose: Illustrates shadow umbra and penumbra
- Description: The foam ball casts a shadow of each of the two point sources in the box. The umbra is where the two shadows overlap and the penumbra is where only one source is shadowed.
- Availability: Available
- Loc codes: E2, LS1
Published in
E2 Astronomy
Tagged under
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Demonstrate how the radius of the earth can be measured using trigonometry.
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E2-03: CRATER FORMATION MODEL
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E2-11: SOLAR PLASMA MODEL
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E2-12: FUSION MODEL
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E2-13: SUNSPOT MODEL
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E2-21: PHASES OF THE MOON
Show the relationship between the phases of the moon and the relative earth-sun-moon positions. Read More
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E2-22 UMBRA AND PENUMBRA
Illustrates shadow umbra and penumbra Read More
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E2-23: UMBRA AND PENUMBRA - EXTENDED SOURCE
Show umbra and penumbra with an extended source, as in an eclipse.
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E2-24: UMBRA AND PENUMBRA - COLOR FILTERS
Identify the source of penumbra regions.
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E2-31: SOLAR SYSTEM MODEL
Illustrate the approximate angular disposition of the planets around the sun.
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E2-32: EPICYCLE MODEL - PTOLEMAIC SYSTEM OF PLANETS
Illustrate the epicycle nature of Ptolemy's model of the solar system
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E2-33: RETROGRADE MOTION
Demonstrate the observation of another planet as seen from the earth.
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E2-34: BASIC ORRERY (PLANETARIUM)
Demonstrate the sun-earth-moon spatial relationship and related concepts..
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E2-35: PLANETS - RELATIVE SIZES MODEL
Illustrate the relative sizes of the planets Read More
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E2-36: DENSITY STRATIFICATION - FORMATION OF PLANETS
Demonstrates how density stratification (differentiation) in interior of planets occurs.
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E2-37: PLATONIC SOLIDS AND KEPLER
Visualize the Platonic solids and Kepler's dream for using them to explain planetary orbits.
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E2-41: TRANSPARENT CELESTIAL GLOBE
Illustrate some relationships between the earth, the sun, and certain heavenly bodies
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E2-42: TELESCOPE MODEL
Show how a telescope can view any point in the sky using a universal mount.
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E2-43: ROTATING STAR FIELD
Show the apparent motion of the night sky.
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Illustrate the orbital motion of a binary star system.
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E2-45: ECLIPSING BINARY STAR MODEL - LIGHTS
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E2-46: ECLIPSING BINARY STAR MODEL - SPHERES
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E2-47: TWINKLING STAR
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E2-48: NON-TWINKLING PLANET
Illustrate why a planet does not "twinkle" like a star.
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E2-50: PULSAR MODEL - FLASHLIGHTS
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Model gravitational collapse.
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Illustrate our galaxy.
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Show that "permanent" spiral structure can exist as a wave which moves independently from the fluid
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Demonstrate the concept of the expansion of the universe.
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E2-71: MILLISECOND PULSAR
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E2-72: AUDIOTAPE 14 MIN - NRAO PULSAR
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E2-73: AUDIOTAPE 18 MIN - SOUNDS FROM SPACE
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