Presentations
Key to Catalog Listings
Size: from small [S] (benchtop) to extra large [XL] (most of the hall)
Setup Time: <10 min [t], 10-15 min [t+], >15 min [t++] /span>
Rating: from good [★] to wow! [★★★★] or not rated [—]
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432 results
432 results
Two small closely mounted bulbs simulate resolution problems.
What it shows:
The ability to resolve two closely separated stars depends upon the aperture size of the observing instrument. Here two tiny bulbs represent stars that are barely resolvable by...
Hand held Plexiglass model of spiral galaxy.
What it shows:
Handy size model of a generic spiral galaxy to show salient features or to describe structure of the Milky Way
How it works:
The model is a 30cm diameter Plexiglass disc 1cm in thickness, with a...
Lights-up-in-the-dark three-dimensional model of the local group.
What it shows:
Three dimensional model of the local group of galaxies, with a scale of 1mm = 1kpc.
How it works:
A large wooden base board forms an x-y plane from which the approximate...
Umbrella decorated with the constellations.
What it shows:
The aberration of starlight is the shift in the position of the image of a star due to the rotation of the Earth about the Sun, and is a consequence of the finite velocity of light. For a star...
What It Shows
As shown in the drawing, the Mercator projection is a cylindrical map projection of the spherical globe. The meridians and parallels of latitude on the globe end up appearing as lines crossing at right angles in the projection. Areas on the...
Selection of igneous, sedimentary and metamorphic rocks.
What it shows:
A selection of rocks and minerals available for lecture demonstrations
How it works:
The following samples are available for show-and-tell in lecture. The samples vary in size, and only...
Total internal refraction of laser beam through sugar solution with refractive index gradient; representative of seismic waves through Earth's mantle.
What it shows:
As a simulation of atmospheric refraction, this demonstration shows the gradual and...
OHP representation of lines of force using bar magnet and iron filings.
What it shows:
The magnetic field lines of the Earth can be represented by the field lines of a bar magnet.
How it works:
The Earth's magnetic field is basically a magnetic dipole...
As demonstrated by two people throwing a volleyball to each other while sitting on rotating platform.
What it shows:
The Coriolis force is a pseudo force existing in a frame that rotates with constant angular velocity to a reference frame. It acts on a...
Nitrogen dioxide is produced by an electric discharge in air and, when sprayed with a water mist, produces acid rain.
What it shows:
Some of the most irritating and dangerous pollutants in our atmosphere are gases such as sulfur dioxide and nitrogen...
Simulation of the greenhouse effect with silvered and unsilvered glass bottles.
What it shows:
Heat energy readily escapes from a clear glass flask, but is trapped inside a silvered flask which rapidly heats up.
How it works:
Two 2L flat bottom Florence...
Sodium chloride solution is added to silver nitrate solution and a white precipitate of silver chloride is instantly formed.
The silver nitrate solution is around 0.1M, and the sodium chloride solution around 0.5M. Pour the sodium chloride sol'n into the...