Scientists Create Perfect Urinal, Win Ig Nobel Prize
Author Name:Dr Ben Miles
Youtube Channel Url:https://www.youtube.com/@DrBenMiles
Youtube Video URL:https://www.youtube.com/watch?v=Elf4cUjwKF0
Title: Scientists Create Perfect Urinal, Win Ig Nobel Prize
Author Name: Dr Ben Miles
Description: Scientists create the perfect urinal that prevents 99% of urine splashes.
Source Article: https://academic.oup.com/pnasnexus/ar...
#biology #breakthrough #science #technology #shorts
My Patreon:🚀 / drbenmiles
My Instagram: / drbenmiles
My TikTok: / drbenmiles
My Newsletter: https://drbenmiles.substack.com/
My Merch: https://www.rockstarscientist.org/
🔗 Linktree: https://linktr.ee/drbenmiles
MY GEAR
📷 Sony A7III https://amzn.to/3OWrmGd
🔎 Sigma 402965 16 mm F1.4 https://amzn.to/49BNJdq
🎤 Shure SM7B https://amzn.to/4sF3ngx
🎤 Zoom H4n Pro https://amzn.to/3OXsklB
🎤 Sennheiser AVX https://amzn.to/4geWnBi
Transcript:
(00:00) Scientists just created the perfect urinal that doesn't splash. Winning them this year's Ig Nobel Prize in physics. Across the 56 million urinals in US non-residential buildings, it is estimated around 1 million liters of urine ends up on the floor every day from bathroom backsplash. >> Floor is wet. >> On impact, each droplet flattens into a thin spreading sheet called a lamella, moving fast enough to generate aerodynamic lift and peeling it away from the contact surface, shattering into satellite droplets to fly out in
(00:28) all directions. But earlier this year, publishing their work in fittingly enough the journal penis, a team out of Waterloo, Canada, named after this exact problem, as well as Caltech, Saudi Arabia, and Weber State set out to stem the flow. First, they 3D printed a nozzle with the exact internal geometry perfectly matching a human urethra.
(00:45) Then, they aimed it at a glass plate and tilted the plate from 90° down to 20, weighing all of the splashback that bounced off. What they found is that below about 30°, the splash all but vanishes. So, they set out to design a shape that no matter the height or the angle of the stream, it hits the surface at 30° or less wherever it lands, a class of mathematical constraints called an isogonal curve problem.
(01:06) That gave the team two answers. One inspired by everyone's favorite logo that never existed, the cornucopia, and a second based on a logarithmic spiral called a nautilus, similar to the shell stood on its end and pulled down into the wall. The result of these shapes is that wherever you aim, the surface is already turning away from you, and so the stream never hits square on, minimizing splash.
(01:26) To test the designs though, they milled them both out of foam and hooked up their urethras to deliver a continuous stream of slightly horrifying red dyed urine substitute, testing them at three flow rates and three inseam heights, using craft paper on the floor to catch the evidence. They found that traditional urinals threw droplets up to a meter away either side, but [music] the cornucopia and nautilus produced 99% less splash of a standard commercial unit.
(01:51) However, the cornucopia is limited because it only works at a single user height. So, the nautilus ultimately came out as number one and is already being considered for use in airlines and trains. Though we still have no clear answer on what happens when you cross the streams. If you like science and minimizing backsplash, follow for more.
Author Name:Dr Ben Miles
Youtube Channel Url:https://www.youtube.com/@DrBenMiles
Youtube Video URL:https://www.youtube.com/watch?v=Elf4cUjwKF0
Title: Scientists Create Perfect Urinal, Win Ig Nobel Prize
Author Name: Dr Ben Miles
Description: Scientists create the perfect urinal that prevents 99% of urine splashes.
Source Article: https://academic.oup.com/pnasnexus/ar...
#biology #breakthrough #science #technology #shorts
My Patreon:🚀 / drbenmiles
My Instagram: / drbenmiles
My TikTok: / drbenmiles
My Newsletter: https://drbenmiles.substack.com/
My Merch: https://www.rockstarscientist.org/
🔗 Linktree: https://linktr.ee/drbenmiles
MY GEAR
📷 Sony A7III https://amzn.to/3OWrmGd
🔎 Sigma 402965 16 mm F1.4 https://amzn.to/49BNJdq
🎤 Shure SM7B https://amzn.to/4sF3ngx
🎤 Zoom H4n Pro https://amzn.to/3OXsklB
🎤 Sennheiser AVX https://amzn.to/4geWnBi
Transcript:
(00:00) Scientists just created the perfect urinal that doesn't splash. Winning them this year's Ig Nobel Prize in physics. Across the 56 million urinals in US non-residential buildings, it is estimated around 1 million liters of urine ends up on the floor every day from bathroom backsplash. >> Floor is wet. >> On impact, each droplet flattens into a thin spreading sheet called a lamella, moving fast enough to generate aerodynamic lift and peeling it away from the contact surface, shattering into satellite droplets to fly out in
(00:28) all directions. But earlier this year, publishing their work in fittingly enough the journal penis, a team out of Waterloo, Canada, named after this exact problem, as well as Caltech, Saudi Arabia, and Weber State set out to stem the flow. First, they 3D printed a nozzle with the exact internal geometry perfectly matching a human urethra.
(00:45) Then, they aimed it at a glass plate and tilted the plate from 90° down to 20, weighing all of the splashback that bounced off. What they found is that below about 30°, the splash all but vanishes. So, they set out to design a shape that no matter the height or the angle of the stream, it hits the surface at 30° or less wherever it lands, a class of mathematical constraints called an isogonal curve problem.
(01:06) That gave the team two answers. One inspired by everyone's favorite logo that never existed, the cornucopia, and a second based on a logarithmic spiral called a nautilus, similar to the shell stood on its end and pulled down into the wall. The result of these shapes is that wherever you aim, the surface is already turning away from you, and so the stream never hits square on, minimizing splash.
(01:26) To test the designs though, they milled them both out of foam and hooked up their urethras to deliver a continuous stream of slightly horrifying red dyed urine substitute, testing them at three flow rates and three inseam heights, using craft paper on the floor to catch the evidence. They found that traditional urinals threw droplets up to a meter away either side, but [music] the cornucopia and nautilus produced 99% less splash of a standard commercial unit.
(01:51) However, the cornucopia is limited because it only works at a single user height. So, the nautilus ultimately came out as number one and is already being considered for use in airlines and trains. Though we still have no clear answer on what happens when you cross the streams. If you like science and minimizing backsplash, follow for more.
No comments:
Post a Comment