A vacuum uses the energy electricity
Radiation.
I think the kind of energy you are looking for is mechanical energy.
mechanical energy
Insulator because there are no particules to carry any kind of energy from one side to the other.
electric energy
electrical
electromagnetic energy
Radiation.
what kind of timber would be best suited to make a mould for use ina a vacuum former
I think the kind of energy you are looking for is mechanical energy.
Radios use eletrical energy
mechanical energy
Magnetic energy
Use an antique hand pumped vacuum cleaner (they existed before the electric ones).
Insulator because there are no particules to carry any kind of energy from one side to the other.
kinetic energy
potential energy