Demonstrate the principle of jet propulsion with this Hero’s Engine flask.
The apparatus consists of a borosilicate glass flask with a rubber stopper and two tubes with tangentially oriented jets. A collar is provided around the flask to hang it above a heating source (Bunsen burner, alcohol lamp or a candle.) When water boils inside the flask, stem escapes the jets and the flask spins.
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
This glass Erlenmeyer mug makes an excellent gift!
View the glory of space with this hi-tech telescope set!
This magic bird defies gravity before your very eyes!
This kit includes several different projects that demonstrate the power of magnets!
This high precision gyroscope will amaze you with rotational speed and ease of precision.
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