The penrig is a unit of tumescence, specifically for the tumescence of the human penis. It is defined as the tumescence that will raise 100 grams of penile tissue through one millimetre. The word is formed from PENis RIGidity. (Wikipedia).
From playlist Trigonometry TikToks
In this edition of IDTIMWYTIM, Hank addresses the so-called centrifugal force, and explains why you really mean centripetal force. Like SciShow on Facebook: http://www.facebook.com/scishow Follow SciShow on Twitter: http://www.twitter.com/scishow References for this episode: http://www.l
From playlist Uploads
All Math Books Should Smell Like This
In this video I will show you one of my books. I really like this book for several reasons. The book covers tons of algebra and trigonometry. Books like this are typically used for courses such as Algebra, Pre-Calculus, and Trigonometry. The book is called Pre-calculus Mathematics and it w
From playlist Book Reviews