This glass square helps to illustrate a convection current in a liquid. To observe this current, fill the frame with water and dye and heat it at the bottom corner with a heat source. Convection currents are then seen as the dye is moved through the glass tube, similar to the circulation of a hot water system. Heat source and support stand are not included.
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Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.