Use your finger to test for any liquid on the outside of each canister. Expected results: More moisture appears on the outside of the film canister that is placed under the cup with a lot of water vapor in it. The film canister under the cup with the dry classroom air has less moisture on it.
Technical knowledge is a theoretical ability to face a technical problem, analyze it, describe it, solve it, talk about it. Commonly found in teachers and drawing table engineers. Technical skill is the practical ability to execute the above.
Technical skills are the knowledge and capabilities to perform specialized tasks. Management often needs to have technical skills in order to communicate effectively with line workers and coordinate efforts.