Description

5 mm in diameter

Hand-painted 4-part human brain model separates into cortical hemispheres and brain-stem regions for lobed-anatomy teaching at introductory biology levels

Engineered with a higher spring constant than a classic coiled novelty spring

5 inches with a brass-chrome water wheel in a 10cm aluminum casing

3m Wave Form Helix Spring for Wave Motion Demonstration Science Classroom 5 mm in diameterClosing to 3m and extending to 9m, this 20mm diameter steel helix carries longitudinal, transverse, and standing waves visibly enough to compare amplitude, frequency, and S wave vs P wave behavior.

Exchange/Return Notes

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3m Wave Form Helix Spring for Wave Motion Demonstration Science Classroom 5 mm in diameter

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