Hand-pumped vacuum shade

Hand-pumped vacuum shade

Product reference: Fiz000426

Tax excl.: zł416.26
Tax incl.: zł512.00
In order notes ask for instructions in Ukrainian as well!


MACHINE TRANSLATION (not authorised yet)

Economic version of classic help demonstrating that sound waves do not propagate in a vacuum. The set includes a transparent bell lamp shade (4-6V AC/DC power supply, flat battery or power supply (included)) placed on a rubberised base with a built-in hand pump enabling significant gas dilution inside the lamp shade and lowering the bell volume. The use of a hand pump makes the aid available at a price and, although it does not provide vacuum conditions, it presents the difference in volume.
KIT READY TO USE after purchase (no need to buy additional items).

Product Details


New Account Register

Already have an account?
Log in instead Or Reset password