ORIGINAL AIRDATE: November 4th, 1991 ---
MacGyver is transported through time to King Arthur's court by a magical flower box.
MISSION: MacGyver is given the opportunity to clear the name of his ancestors by traveling back to medieval times to save the lives of Galahad and his betrothed with the help of Merlin under orders from King Arthur himself.
This week's highlights include:

Electrolysis (Chemistry)

In chemistry and manufacturing, electrolysis is a technique that uses a direct electric current (DC) to drive an otherwise non-spontaneous chemical reaction. Electrolysis is commercially important as a stage in the separation of elements from naturally occurring sources such as ores using an electrolytic cell. The voltage that is needed for electrolysis to occur is called the decomposition potential.

Check out the article on wikipedia: https://en.wikipedia.org/wiki/Electrolysis.

Watch S7E7: "Good Knight MacGyver: Part 1" on CBS's website or check the alternative streamability of this episode here.