ma in this context means "millions of years ago".
Chat with our AI personalities
Precambrian - It extends from 4.6 billion years ago to the beginning of the Cambrian Period (about 541 Ma). It includes three eons, the Hadean, Archean, and Proterozoic.
The queen of Egypt 2000 years ago was Cleopatra VII. She was the last active ruler of the Ptolemaic Kingdom of Egypt, and her reign is known for its political intrigue and alliances with powerful Roman leaders such as Julius Caesar and Mark Antony. Cleopatra is also renowned for her beauty and her tragic end.
Ma
105,167 people live in Lowell
Safe for what? Anything under 10 mA should be OK for a short period of time. See table in related link: Electric Current Needed to Kill a Human.