Semicircular Refraction Dish

Semicircular Refraction Dish

Semicircular Refraction Dish

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754619
Regular price $5.59
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This semicircular refraction dish is an economical way to open discussions and create hands-on labs about light waves and their properties. Fill the easy-to-clean dish with a liquid such as water, olive oil, or ethanol. Have students calculate the refractive index of each, compare their results, then check their data against known values for accuracy. To be successful with the activity, students need a basic understanding of geometry and trigonometry for a right triangle.

Plastic semicircular dish measures 12 cm across and 2 cm deep. Materials needed but not supplied include common liquids, straight pins or lasers, and protractors. Common classroom supplies such as rulers, paper (plain or polar graphing), and pens are also needed. Extend the activity by substituting a lens or prism for the liquid-filled dish or by using a laser line to replace the line of sight/straight pin measurement. Take care when selecting liquids, as some may react with the dish.

Activity suggestions:

  • Identify an unknown liquid by refractive index
  • Investigate the relationship between refractive index and solution concentration
  • Calculate percent error between experimental refractive index and the accepted value

Helps you teach the following Next Generation Science Standards Student Performance Expectations:

  • Waves and their Applications in Technologies for Information Transfer (PS4)
    The path that light travels can be traced as straight lines, except at surfaces between different transparent materials (e.g., air and water, air and glass) where the light path bends. (MS-PS4-2)
  • Waves and their Applications in Technologies for Information Transfer (PS4)
    The path that light travels can be traced as straight lines, except at surfaces between different transparent materials (e.g., air and water, air and glass) where the light path bends. (MS-PS4-2)
    Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. (HS-PS4-1)
  • Wave Properties (PS4.A)
    The wavelength and frequency of a wave are related to one another by the speed of travel of the wave, which depends on the type of wave and the medium through which it is passing. (HS-PS4-1)

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All shortages, defects and deficiencies must be reported within 7 days of receiving the shipment. Merlan Scientific cannot assume responsibility for shortages reported after this period.

On receiving goods, check your packing slip and the package contents carefully. Please report any damaged items immediately and keep all shipping materials for inspection. If you have any questions please call 1-800-387-2474 or write us at info@merlan.ca.

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WARRANTY POLICY

Merlan Scientific warrants that each product will be free of defects in materials and workmanship for a period set forth in its published user manuals for its system products and for a period of one (1) year for its component products. The warranty commences on the date the product is shipped by Merlan Scientific. Merlan Scientifics’ sole liability and responsibility under this warranty is to repair or replace any defective product, which is returned to it by the buyer, and which Merlan Scientific determines qualifies for repair or replacement under the terms of the applicable warranty. The product returned to Merlan Scientific for warranty service will be shipped to Merlan Scientific at the buyers expense and will be returned to buyer at Merlan Scientifics’ expense. In no event shall Merlan Scientific be responsible under its warranty for any defect, which is caused by negligence, misuse or mistreatment of a product, or for any unit, which has been altered or modified in any way. The warranty of repaired and replacement products shall terminate with the original warranty of the product.

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