92 Résultats pour : « Science First »

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This device shows how the sun's appearance changes over a period of one month.

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This simple lab enables students to build a telescope that is similar to Galileo’s.

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The Sunspotter Keplerian Telescope lets users safely view the light of the sun.

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This generator can perform all electrostatic experiments on a spectacular scale.

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Be Prepared For Your Electrochemistry Experiments

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Study different concepts utilizing sunlight or darkness.

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Ptolemaic Planetary System Model.

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Thsese tubes meets GLOBE requirements.

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Nets allow horizontal or vertical tows for plankton analysis.

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This bottle is excellent for near off-shore (to 200 m) trace metal sampling, since there are no metal parts to touch the sample.

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Has All the Components Necessary to Start Collecting Samples Right Away

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Sort and separate materials with this durable metal sieve set.

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Convienent Classroom Farming.

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Introductory Planetarium is a simple model for hands-on demonstrations.

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Water sampler for samples of lake, river, or stream water.

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Estimate stream quality as it relates to solids in the water.

This Turbidity Tube is made from 1-³/₄" (4.4 cm) clear polycarbonate tubing and is marked with easy to read black numbers on a white tape; tape is marked in centimeters. A drain tube with a crimp are supplied so the sample can be drained off until the Secchi pattern on the bottom just appears. The height of the water column is then recorded. Overall length of the tube is 24" (61 cm).

The optional Transparency Tube (item #67311-46) allow you to measure turbidity in streams where a secchi disk can't be used--simply fill the tube with water and look down. Each clear polycarbonate tube features a centimeter scale on one side and a secchi disk design, 2" (4.5 cm) in diameter, on the bottom. The secchi design is screwed to a rubber stopper that removes for cleaning. Drain the tube with the drain hose and attached finger crimp. Ideal for the GLOBE program!

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Create Dramatic Electrostatic Effects

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Estimate stream quality as it relates to solids in the water.

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Simulate a flowing stream and study erosion with this classroom stream table.

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The Perfect Introduction to Temperature and Conduction.

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For consistent readings underwater.

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Clear Measurements in Classic Study of Electrons

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Investigate light spectra with this easy-to-use spectrometer.

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Explore the relationship between acoustical tones and the physical circumstances that give rise to them

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Produce constant acceleration with this fan cart.

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Explore Relative Age Dating.

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Produces circular waves from either one or two point sources. The phase relationship is continuously adjustable. A variable, low voltage power supply, such as our 64250-10, allows the speed to be adjusted also. Securely mounted in a molded housing with four non-skid, shock-absorbing feet.

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Clearly shows the path of the sun at any latitude during any month of the year.

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Simple to operate and easy to use, this economical wind vane clearly provides current wind direction. Its heavy cast base and sturdy post support a sensitive cone bearing assembly that responds to even the slightest wind. Place the “N” portion of the wind vane in the northern position and read off the direction shown by the pointer.

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Acetate Strips