Articles, Blog Seven Science Experiments with Surface Tension Related posts: The Cheerios Effect The Backwards Brain Bicycle – Smarter Every Day 133 COLD HARD SCIENCE. The Controversial Physics of Curling – Smarter Every Day 111 COLD HARD SCIENCE.The Physics of Skating on Ice (With SlowMo) – Smarter Every Day 110 experiments h20 middle school physics physics girl science surface tension water Post navigation COLD HARD SCIENCE.The Physics of Skating on Ice (With SlowMo) – Smarter Every Day 110What It’s Like To Be A Freemason, According To Members Of The Secret Society 100 Comments Zom Bee Nature October 14, 2017 at 11:22 am Reply But can you believe what a blond says about physics? Everyone, please watch my little nature videos. There is no talking in them. Shhh! Jonathan Smith October 16, 2017 at 5:51 am Reply I don't know why the spheres form, but I assume it's similar to how soap bubbles form a spherical shape. (It requires the least amount of energy.) I don't know what the compound is, but it appears to make the molecules adhere to one another, until the energy is lost. I know that some coffee contains 'foaming agents', so that may be all it is. Jisha P.V October 22, 2017 at 11:59 am Reply thanks it was helpful Suburp212 October 23, 2017 at 1:14 pm Reply how did the soap flavored coffee taste? SmartGamerDude November 6, 2017 at 4:51 am Reply ANTI BUBBLES!!! Kapil Chhipa November 13, 2017 at 3:36 pm Reply Easily explain thanks Erin OBrien November 18, 2017 at 10:53 am Reply The little spheres are Anti-bubbles? purpleblake November 20, 2017 at 1:08 am Reply We know so much about water and yet there is still lots we don't know about water David Black December 4, 2017 at 1:52 am Reply If you put soap on your finger you can touch a bubble without popping it. I love that one. Martin Hazard December 8, 2017 at 4:27 pm Reply titulo en españollol Nahla Ashraf Thabet December 13, 2017 at 9:06 pm Reply I still didn't understand the relation between water's surface tension and hot surface at last experiment Physicist Without a Degree December 19, 2017 at 8:06 pm Reply Your rooster is saying Happy Physicsing… kushal kollu December 31, 2017 at 9:04 am Reply Someone explain the first experiment rohit ranjan January 1, 2018 at 11:13 pm Reply Good one Monjipour January 5, 2018 at 12:04 am Reply Last time I had a coffee, I saw antibubbles forming… I know for a fact that was only water, coffee and sugar and it was in a paper cup so no dish soapCould the coffee or sugar be creating this ? Sudhir Das January 7, 2018 at 3:55 pm Reply Wow CGS January 10, 2018 at 5:38 pm Reply so hornyso hornyso hornyso hornyso hornyso hornyso hornyso hornyso hornyso hornyso hornyso hornyso hornyso hornyso hornyso hornyso hornyso hornyso hornyso horny SANTOS KUMAR BEURA January 13, 2018 at 6:32 am Reply worst R BK January 18, 2018 at 5:34 pm Reply Yes…I had been always seeing the last one in my pan smruti ray January 22, 2018 at 7:15 am Reply The spherical water phenomenon has been well explained by @Destin Sandlinon his channel Smarter everyday in one of his videos Montague Cush January 28, 2018 at 3:41 pm Reply Surface tension R vd kolk January 31, 2018 at 9:32 pm Reply Can it be that it has something to do with the dark side of the moon? Steve Cooper February 1, 2018 at 4:03 pm Reply Thanks to mom for filming and letting you spill water all over!? Kingshuk mallick February 13, 2018 at 6:59 pm Reply what type of colour did you use? we tried with food colouring and it did not work out. seededsoul February 14, 2018 at 11:16 am Reply watching your vids is giving me milk fireworks Montague Cush March 9, 2018 at 10:28 pm Reply Surface tension Ashish Shukla March 26, 2018 at 5:44 pm Reply I love you 😍😍 Spike Volcanohead March 31, 2018 at 3:07 am Reply The most likely reason for soap/bubbles in your coffee is a poorly-rinsed mug or 'possibly' the use of a glycerin "anti-streaking agent" in the dishwasher. Vicky Garcia April 6, 2018 at 10:02 pm Reply It’s anti bubbles Rakhi Tailong April 7, 2018 at 7:20 pm Reply What is the reason for the last experiment??? AlexGastro April 15, 2018 at 12:15 am Reply This is avery old video, but i didnt see anu comment pointing out that grinded coffee (like in a coffe shop) contains oils, much more than old grinded coffee, like the ones at the store, and of course more than soluble coffee, also could be that the mug had soap residues from when it was cleaned. da man April 19, 2018 at 12:48 am Reply Wow your so smart, Love your videos 🙂 x8db8x April 21, 2018 at 12:50 am Reply BOOOOOUNSSSS MEEEEEMMMMME...sorry, wrong channel 🙂 kilroy987 April 24, 2018 at 4:01 pm Reply So soap wrecks surface tension in water, but generates it in milk and coffee? Jasurian Moodley April 26, 2018 at 9:21 pm Reply Physics Girl, I love your videos 😆…. Wish I took physics in high school 😒 audrey morgan April 28, 2018 at 12:44 am Reply The spheres are called anibubbles and you already made a video on them Luffy May 2, 2018 at 8:57 am Reply i want to know more about that chicken Ashwin Singh May 4, 2018 at 2:29 pm Reply Number 4 is not surface tension it’s the air pressure difference between the inside and the outside. The clue that it’s not surface tension is the fact that you can break the surface tension with a paper clip (as you did) and it still doesn’t let the water out. I suppose the screens action is to prevent a large nucleation site for air bubbles to form on and then make their way up through the water? Not sure about that part entirely like what the effect of the screen is. As for number 2, the reason is probably something to do with how soap molecules on a surface of water align their hydrophobic sides on the outside of the water, and so I guess when you turn them into small bubbles that creates a hydrophobic film which cannot mix with the water body below it. That’s why the droplet remains there and doesn’t just go straight back into the water. I do wonder what was in your coffee the first time you saw this… littlesnowflakepunk May 11, 2018 at 11:12 pm Reply Kinda wish Cmmdr Chris Hadfeild were still in space so he could experiment with breaking surface tension with soap on spheres of water in microgravity Kevin Favro May 18, 2018 at 7:23 pm Reply Che figa Toto 905122 May 24, 2018 at 12:11 am Reply Anti bubbles Huong Huyen Huynh (Victoria) May 30, 2018 at 11:06 am Reply Can you explain me the paper clip experiment? Quahntasy - Animating Universe June 18, 2018 at 9:49 am Reply Who is here in 2018? unicycle June 25, 2018 at 4:28 am Reply About soapy droplets: https://aip.scitation.org/doi/abs/10.1063/1.2335905?journalCode=phfIf there are capillary waves then air cushion below droplet is replenished. Surface tension makes wavelength longer : https://en.wikipedia.org/wiki/Capillary_wave. So tiny vibrations keep replenishing the air cushion below the droplets. Julien Ortega June 27, 2018 at 5:42 am Reply I think the coffee sphears may also be caused by grease as i find it particularly noticeable in waffle house or fast food coffee OniFeez June 30, 2018 at 5:27 am Reply Why would you think to put soap in your coffee to try and duplicate the effect? :O Anand Mohan Kalam Academy July 6, 2018 at 8:36 pm Reply Great stuff on Surface Tension. shiv chauhan July 16, 2018 at 4:16 pm Reply Perhaps in the coffee soap thing, the coffee molecule – coffee molecule bonds are stronger than coffee molecule -soap molecule bond and thus remains separate like mercury balls on a table…. Sean Whelan August 24, 2018 at 6:48 pm Reply Anti bubbles! shreya rastogi September 8, 2018 at 5:43 pm Reply Can you explain the reason of the last two experiment J Morin September 13, 2018 at 12:26 am Reply Good, BUT, no explanation for kids to know "why" !! You taught them NOTHING (why, or how) . I know why, kids don't. Sry, FAIL. Thumbs down? Someone Unknown September 21, 2018 at 1:19 am Reply Soap is the destroyer of surface tension fun! MeeR'Z Express October 7, 2018 at 3:10 pm Reply Good Divya Suryawanshi October 15, 2018 at 9:55 am Reply Superb mam SALFA DEBBARMA TRIPURA Yourself Fast October 20, 2018 at 4:06 pm Reply I 👩❤️👩 u Andrew Andrus October 29, 2018 at 2:29 am Reply if you watch this on half speed its pretty hilarious Johnson Ekka October 29, 2018 at 1:58 pm Reply i have done that last one many times ,but didnt knew what was that about navneet kumar November 4, 2018 at 5:58 pm Reply Spheres in the coffee cup (+ little bit of soap) experiment is in fact anti-bubble. These anti-bubbles jump and move on the parent surface. Researchers are trying to understand the behaviour of wave and particle motion by oscillating the parent liquid. There is a nice video on this though I don't remember the link. I forgot to thank you for nice demos. Cheers. Janet Carballo November 6, 2018 at 4:28 pm Reply You can add an extra experiment! Call it "Volcano Bubbles". You just put Baking Powder/Soda To Vinegar and there you go! You get a VOLCANO!!!!!!!!! Really Cool,Right? We've done it at my mom's house! Staring Hamster December 5, 2018 at 2:21 am Reply Any of you guys watching this because of chemistry class? A joke my school will understand. Bhuvanitha Priyadharshini December 6, 2018 at 4:58 pm Reply That's simply cool.. 👍 Chris Squire December 11, 2018 at 11:04 pm Reply the balls on the surface are likely oils attracted by the soap, its purpose is to break down grease and oil and oil and water do not mix the attraction of the soap brought it to the surface where it will sit khushboo kumari December 25, 2018 at 3:11 pm Reply Nice friend… bwilly the kid January 10, 2019 at 7:09 pm Reply Did you have full fat milk or cream in your first coffee? RN piyush Sen January 12, 2019 at 8:01 am Reply 😂😂😂😂 👍 Aditya Wasake February 1, 2019 at 5:51 pm Reply Why does the paper clip sink in the water when soap is added Game Theory February 18, 2019 at 1:42 pm Reply Nice channel very cool stuffs….I did the same experiments u did and I was really amazed to see all that….thanks a lot Jugnu Batra February 23, 2019 at 5:49 pm Reply Nzara aa gya Abhishek Youniverse March 14, 2019 at 9:13 am Reply Waah maza aagya.. Rob Ot April 27, 2019 at 3:56 pm Reply Science made cute. Red Angry Bird May 1, 2019 at 11:05 am Reply Cute girls not supposed to be interested in physics, what kind of world we live in nowadays. 😉😪😲 Patricio Tourne Passarino May 9, 2019 at 5:02 pm Reply https://youtu.be/KJDEsAy9RyMSmartereveryday has done a video on the second effect David Chester May 16, 2019 at 7:55 pm Reply Can you suggest a way that we can use surface tension to drive a machine (such as a wheel), which is not by added chemicals such as soap? Nadav Shalinsky May 21, 2019 at 1:42 am Reply Smarter every day explained the water droplet experiment wellhttps://youtu.be/KJDEsAy9RyM Fun Panrom! May 28, 2019 at 3:44 pm Reply i always do the last one Super 8 June 1, 2019 at 10:12 pm Reply 0:52 it's anti-bubble Lloyd Dominic Refuerzo June 7, 2019 at 3:30 pm Reply The thing that was in your coffee is an antibubble. Your future self has already made a video of that. Michael Skinner June 9, 2019 at 12:58 am Reply Let's Gooooo! go back to hong kong or i will keemstar you June 14, 2019 at 5:36 am Reply woah my favorite part about surface tension is the helicopter battle on the cliff side liquid klone June 21, 2019 at 9:37 am Reply Instructions unclear: Burned my favorite pot. Neil Siebenthal July 5, 2019 at 5:59 pm Reply I asked my mom for adult supervision to try this. All she said was you're 30!!! Paulo Gomes July 8, 2019 at 11:38 am Reply Hi Diana, I would like to share with you the phenomenon that occurs with the drop of milk that "floats" on the milk, this phenomenon is called coalescence. I have a video on my channel demonstrating this phenomenon.https://www.youtube.com/watch?v=KmdxHMwYlAc&t=102s I would like to take the time to ask if you would like to explain in one of your videos the Leslie Cube experiment?https://www.youtube.com/watch?v=KGVUB1Ut0rs&t=29s If you want to send to you from here one of my cubes that I made, contact me by email: [email protected] Thank you. michael montanari July 18, 2019 at 11:05 pm Reply i presume the mug of your first coffee wasnt properly rinsed, so there was some soap residue left inside the cup after beeing washed NAVEEN KUMAR SINGH August 2, 2019 at 6:21 am Reply Can you help me in physics please? Feb Vel August 21, 2019 at 9:53 pm Reply Shes so pretty tho…. 😍 vclamp August 23, 2019 at 4:10 pm Reply What a nice video at the end of the day to help me decompress. 😛 Jim's videos August 28, 2019 at 2:04 am Reply Ok I'm late with this, but long hair and a gas stove is a recipe for… well, yeah. LAKHAN MASKE September 19, 2019 at 2:37 pm Reply Fantastic El dragón de saturno September 20, 2019 at 5:13 am Reply te amo! 🙂 Justin Fanai September 24, 2019 at 5:01 pm Reply I really really love it h y October 2, 2019 at 6:40 am Reply …..awesome…… Gulnaz Bee October 6, 2019 at 3:45 am Reply 1st and 2nd experiment is so interesting Mari Uchiha October 13, 2019 at 3:49 pm Reply Could you explain in more detail why that happens?It is the first experiment. Hajara Abdul raheem October 13, 2019 at 5:19 pm Reply Some experiments are repeating in some videos .. but anyway I love your unique explanation !! Goundo Fofana October 14, 2019 at 9:14 pm Reply That was cool Ryan Kolenda October 21, 2019 at 4:15 am Reply The surface tension water mason jar my teacher did it with a laminated card and no screen and it worked Joshua Thomas Macalintal Soliman Pietro Soliman November 3, 2019 at 5:09 pm Reply Antibubbles Anil Kumar Sharma November 3, 2019 at 8:19 pm Reply total energytotal volumetotal heightby capillarity action water, distilled😋😋 ssozi parks November 8, 2019 at 10:14 am Reply this so nice. we are talking about this in class Naman Srivastava November 10, 2019 at 5:41 pm Reply Loved your experiments💥💥👏👏👏 Leave a Reply Cancel Save my name, email, and website in this browser for the next time I comment.