Place petri dish on stage of overhead projector. Pour water into dish to a depth of ¼” to 3/8” Scoop a small amount of Pb(NO3)2 into the water at one side of the dish. Scoop a small amount of KI into ...

In it, an apparently normal-looking petri dish is treated so as to reveal a message when wetted with water vapor. The contrast between hydrophobic and hydrophilic surfaces, which is not visible to ...

The accidental discovery of a fungal contaminant in a Petri dish by Sir Alexander Fleming in 1928 led to ... and is co-produced with the ACS Division of Agricultural & Food Chemistry.

Pour 0.2 M solutions of Cu2+, Ag+, and Zn2+ into two petri dishes per solution (six total) to a depth of about 3/8". Add a clean sample of each metal to the cation solutions of the other two metals ...

The chef shared a miniature version of gajar ka halwa where she prepared the dessert in mini petri dishes as a palate cleanser.