Gamma rays
No. It will contaminate the plates.
A Petri dish is a small, clear plastic dish that is used in science and experiments.
A "petri dish"
it is to prevent the moisture formed due to condensation of the agar ,to mix with the components present in the petri plates, else causes contamination
The use of agar in petri plates.
Because during incubation moisture will form at the top of the petri dish. Inverting the dish prevents it from dropping into whatever you have in the petri dish.
A Petri dish is a shallow glass or plastic cylindrical lidded dish that biologists use to culture cells. It was named after German bacteriologist Julius Richard Petri, who invented it when working as an assistant to Robert Koch. Glass Petri dishes can be re-used by sterilization (for example, dry heating in a hot air oven at 160 °C for one hour); plastic Petri dishes must be disposed of after one use.
A petri dish is a tool, not a math function. It is a shallow glass or plastic cylindrical lidded dish that biologists use to culture cells.
A Petri dish is a shallow glass or plastic cylindrical lidded dish that biologists use to culture cells. It was named after German bacteriologist Julius Richard Petri, who invented it when working as an assistant to Robert Koch.
A Petri dish is a shallow glass or plastic cylindrical dish that biologists use to culture cells, which can be bacteria, animal, plant, or fungus.
Petri dishes are generally made out of glass, so they will not melt if microwaved. If it is made of plastic, it may melt - but I would not expect it to.
It's part of proper sterile procedures as a precaution against contamination of the media by microorganisms that have attached to the edge of the petri dishes since the last sterilization.