Today I Found Out

How Do Pregnancy Tests Work? And Why "You Aren't Pregnant Until the Rabbit Done Died" (2020x104)

Air date: May 11, 2020

Want some fun with your facts? Chec→→Subscribe for new videos every day! https://www.youtube.com/user/TodayIFoundOut?sub_confirmation=1 Follow Simon on social media: https://twitter.com/SimonWhistler https://www.instagram.com/simonwhistler/ Never run out of things to say at the water cooler with TodayIFoundOut! Brand new videos 7 days a week! More from TodayIFoundOut: How Did They Get the CGI in the 1993 Jurassic Park to Look So Good? https://youtu.be/l4UuQxjFpfU What Function Does Natural Aspirin Serve in Plants? https://youtu.be/ejLFtO1ieRM In this video: In most cultures throughout history there was no reliable way for a woman in her first trimester to definitively know whether or not she was pregnant, with one of the leading "tests" through the ages using uroscopy- studying the colour, consistency, and taste of a woman's urine, with the practitioners colloquially called "piss prophets". Another interesting urine based method was dipping a ribbon in the urine and then burning it to study the smoke and the flame's colouration. Want the text version?: http://www.todayifoundout.com/index.php/2013/02/how-pregnancy-tests-work/ Sources: http://wwwchem.csustan.edu/chem4400/sjbr/maragoul.htm http://history.nih.gov/exhibits/thinblueline/timeline.html http://www.fda.gov/MedicalDevices/Safety/AlertsandNotices/TipsandArticlesonDeviceSafety/ucm109390.htm http://laser.cheng.cam.ac.uk/wiki/images/6/67/ModernMetrology_Appendix.pdf http://www.aeicbiotech.org/WhitePapers/training.pdf