Physics and Astronomy
In everyday life, we usually directly note two basic forces: gravity and electromagnetism. Gravity—as in the acceleration due to Earth’s gravity—tends to be a background force of sorts, something that is always present and always the same. We don’t always see electricity and/or magnetism as such, but their subsidiaries are all around us—friction, normal force, tension, springs, and the like.
The Physics Teacher
(2018). May the Forces Be With You!. The Physics Teacher, 56(2), 118-119.
Available at: https://aquila.usm.edu/fac_pubs/15776