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Friday, 19 July 2013 12:44
E2-22 UMBRA AND PENUMBRA
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Illustrates shadow umbra and penumbra
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.
Last modified on Friday, 21 August 2020 13:54
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E2-32: EPICYCLE MODEL - PTOLEMAIC SYSTEM OF PLANETS »
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A General Materials and Mathematics
A1 Basic Materials and Measurement
B1 Center of Mass Statics
B2 Equilibrium of Forces and Torques
B3 Simple Machines
C Kinematics and Dynamics
C1 Center of Mass Motion
C2 Kinematics in One and Two Dimensions
C3 First Law of Motion
C4 Second Law of Motion
C5 Third Law of Motion
C8 Mechanical Energy and Power
D Rotational Mechanics
D1 Rotational Kinematics and Dynamics
D2 Moment of Inertia
D3 Angular Momentum
D5 Rotational Esoterica
E Gravitation and Astronomy
E1 Gravitation and Orbits
F Fluid Mechanics
F1 Pressure in Static Fluids
F3 Surface Tension
F4 Fluid in Motion
F5 Forces in Moving Fluids
G Vibrations and Mechanical Waves
G1 Simple Harmonic Motion
G2 Resonance and Coupled Oscillations
G3 Mechanical Waves - One Dimensional
G4 Mechanical Waves - Two Dimensional
H1 Nature of Sound
H2 Wave Properties of Sound
H3 Standing Sound Waves
H5 The Ear
H6 The Voice
I1 Thermal Properties of Matter
I2 Transfer of Heat
I4 Changes of State
I5 Laws of Thermodynamics
I6 Kinetic Theory and Statistical Mechanics
I7 Solid State and Low Temperature Physics
J Electostatics and Magnetostatics
J1 Electrostatic Charge and Force
J2 Electrostatic Devices and Applications
J3 Electric FIelds and Potential
J4 Capacitance and Polarization
J7 Magnetic Materials
K Electromagnetic Principles
K1 Forces on Moving Charges
K2 Electromagnetic Induction
K4 Motors and Generators
K5 Electrical Properties of Matter
K6 Electric Circuits and Instruments
K7 RLC Circuits
K8 Electromagnetic Waves and Sources
L Geometrical Optics
L1 Light Sources and Light Rays
L2 Plane Mirrors
L3 Curved Mirrors
L5 Total Internal Reflection
L7 Optical Instruments
M Wave Optics
M1 Interference and Diffraction - Slits and Gratings
M2 Diffraction - Circular
M4 Thin Film Interference
M5 Interference and Diffraction Esoterica
M7 Linear Polarization and Scattering
M8 Optical Activity and Birefringence
M9 Circular Polarization
N Spectra and Color
N1 Continuous Spectra
N2 Line Spectra
O1 Image Production
O2 Visual Latency
O3 Color Vision
O4 Optical Illusions
P Modern Physics
P2 Quantum Mechanics
P3 Atoms and Molecules
P4 Nuclei and Particles
Q1 Musculoskeletal Systems
Q3 Genetics and Molecular Biology
E2-01: WORLD GLOBE
Illustrate the globe
E2-02: MEASUREMENT OF RADIUS OF EARTH
Demonstrate how the radius of the earth can be measured using trigonometry.
E2-03: CRATER FORMATION MODEL
Illustrate how a crater forms as a result of an impact or a blast from below.
E2-11: SOLAR PLASMA MODEL
Mass driver and ring heater show coronal holes and coronal heating.
E2-12: FUSION MODEL
Demonstrate how nuclei attract each other if they come close enough together.
E2-13: SUNSPOT MODEL
Show how sunspots are darker than their surroundings due to lower temperatures.
E2-21: PHASES OF THE MOON
Show the relationship between the phases of the moon and the relative earth-sun-moon positions.
E2-22 UMBRA AND PENUMBRA
Illustrates shadow umbra and penumbra
E2-23: UMBRA AND PENUMBRA - EXTENDED SOURCE
Show umbra and penumbra with an extended source, as in an eclipse.
E2-24: UMBRA AND PENUMBRA - COLOR FILTERS
Identify the source of penumbra regions.
E2-31: SOLAR SYSTEM MODEL
Illustrate the approximate angular disposition of the planets around the sun.
E2-32: EPICYCLE MODEL - PTOLEMAIC SYSTEM OF PLANETS
Illustrate the epicycle nature of Ptolemy's model of the solar system
E2-33: RETROGRADE MOTION
Demonstrate the observation of another planet as seen from the earth.
E2-34: BASIC ORRERY (PLANETARIUM)
Demonstrate the sun-earth-moon spatial relationship and related concepts..
E2-35: PLANETS - RELATIVE SIZES MODEL
Illustrate the relative sizes of the planets
E2-36: DENSITY STRATIFICATION - FORMATION OF PLANETS
Demonstrates how density stratification (differentiation) in interior of planets occurs.
E2-37: PLATONIC SOLIDS AND KEPLER
Visualize the Platonic solids and Kepler's dream for using them to explain planetary orbits.
E2-41: TRANSPARENT CELESTIAL GLOBE
Illustrate some relationships between the earth, the sun, and certain heavenly bodies
E2-42: TELESCOPE MODEL
Show how a telescope can view any point in the sky using a universal mount.
E2-43: ROTATING STAR FIELD
Show the apparent motion of the night sky.
E2-44: BINARY STAR MODEL
Illustrate the orbital motion of a binary star system.
E2-45: ECLIPSING BINARY STAR MODEL - LIGHTS
Show how we view a rotating binary star.
E2-46: ECLIPSING BINARY STAR MODEL - SPHERES
Illustrate the orbits of stars in an eclipsing binary.
E2-47: TWINKLING STAR
Show how air currents cause the "twinkling" of a star.
E2-48: NON-TWINKLING PLANET
Illustrate why a planet does not "twinkle" like a star.
E2-49: PULSAR MODEL - RADIOWAVES
Show the changing field pattern from a rotating dipole.
E2-50: PULSAR MODEL - FLASHLIGHTS
Illustrate beaming pattern of pulsars and pulsed binary X-ray sources.
E2-51: GRAVITATIONAL COLLAPSE - MODEL
Model gravitational collapse.
E2-53: STELLAR EVOLUTION - HYDROGEN BURNING
Provides models for hydrogen burning to produce helium in stars via the proton-proton chain.
E2-54: REFLECTING TELESCOPE - STRING MODEL
Shows how rays are focused by a standard reflecting telescope.
E2-61: GALAXY MODEL
Illustrate our galaxy.
E2-62: SPIRAL GALAXY - WATER MODEL
Show that "permanent" spiral structure can exist as a wave which moves independently from the fluid
E2-63: EXPANDING UNIVERSE
Demonstrate the concept of the expansion of the universe.
E2-71: MILLISECOND PULSAR
E2-72: AUDIOTAPE 14 MIN - NRAO PULSAR
E2-73: AUDIOTAPE 18 MIN - SOUNDS FROM SPACE