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.
Use this laser pointer for any professional presentation!
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
Illuminate both your room and your mind with this ingenious Periodic Table Lamp.
This quality Dobsonian style telescope features a 76 mm aperture reflector optical tube.
This illuminated orbiter is great for demonstrations in the astronomy classroom!
A massive mounted set of 100 rocks and minerals found in the US,