This is one of the apparatus to be used in scientific laboratories to demonstrate that sound needs a medium to travel.
Turn on the bell placed in this vacuumed jar.
Now during this experiment the sound that will be produced in this jar is not audible to our ears, as the sound waves can’t travel in a vacuum state and they need a material medium for its propagation.
It can also place on pump plates to perform experiments with diameter at least 15cm.
Excellent demonstration tool for science classrooms.
A magnet is a piece of metal with a strong attraction to another metal object. The attraction a magnet produces is called a "magnetic field."
Magnet Bar is a rectangular piece made up of iron and steel material or ferromagnetic substance/composite like other Magnets when suspended freely, aligns itself along the Magnetic field of the earth.
Ferromagnetic substances itself has the properties of magnet.
Set of 2 bar magnets are standard blue & red in color with engraved North / South pole markings.
Made of high quality chrome steel that is built to last and withstand multiple uses.
The Parafilm is a moisture-resistant thermoplastic used to seal Nematode Growth Media (NGM) agar plates on which the nematode Caenorhabditis elegans is cultured. This practice reduces media dehydration and microbial contamination.
The Parafilm sealing film can be stretched up to 200% and clings around irregular shapes and surfaces.
It is resistant to many polar substances such as saline solutions, inorganic acids and alkaline solutions for up to 48 hours (After this time it may become brittle)
Parafilm is a semi-transparent, flexible film composed of a blend of waxes and polyolefin.
