The first thing....

  • The FTB Forum is now read-only, and is here as an archive. To participate in our community discussions, please join our Discord! https://ftb.team/discord
Units.

It’s related to a derived unit of ionising radiation dose (the Sievert); it’s not restricted to alpha. It’s often used when measuring radioactivity in terms of potential low level hazard to the human body - many dose meters measure emitted radiation thusly (in μSv/h)
 
MacGuffin (because I’m sure quantum strings, filaments and singularities came up on multiple occasions as plot devices in Star Trek)