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Why are Tennis balls Yellow and Fuzzy? | #aumsum

December 18, 2019

It’s AumSum Time Why are tennis balls yellow and fuzzy? Because they like to show off. Earlier, tennis balls were white. But later, they were changed to yellow. Because studies showed that yellow balls were easier to see on televisions. Now, tennis balls are fuzzy because the fuzz helps them slow down. When a tennis ball moves through air. Every fiber of fuzz acts like an obstacle
for air. This increases the drag, thus slowing it down. Besides this, the fuzz also increases the
spin. Imagine a ball spinning in clockwise direction. Now, above the ball, the direction of air
is same as the direction of rotation. However, below the ball, it is opposite. This opposing force combined with the fuzz increase the drag below the ball. Hence, the pressure below becomes much higher than it is above. This pressure difference imparts a lift, thus increasing the spin. Why do pop rocks pop? Because they have springs in their legs. No. Pop rocks are tiny candy crystals. Candies are usually made using sugar, water, corn syrup, various flavorings, etc. Initially, all these ingredients are mixed
together. The resulting solution is heated until most of the water boils off. And we are left with a thick sticky syrup. Usually, this syrup is poured in moulds, allowed to cool and harden to make candies. However, to make pop rocks, highly pressurized carbon dioxide gas is added to the syrup. And then, it is cooled to subsequently form a hard candy. This results in formation of bubbles of pressurized carbon dioxide trapped inside candy. Now, when we put this candy in our mouth, our saliva dissolves the candy. As a result, the highly pressurized carbon dioxide escapes from bubbles with a pop. Why do elephants have big ears? To fly. Not at all. Ears basically help to hear. Besides this, big ears of the elephants also help it to regulate its body temperature. But how can ears help to regulate body temperature? In living beings like elephants, blood supplies heat to all parts of the body. Thus, helping it to maintain the body temperature. However, due to metabolic activities or hot climate, sometimes heat in blood can increase. Thus, increasing the body temperature of the elephant. Now an elephant’s big ears are filled with blood vessels. Which are very close to the surface of skin. Hence, when blood having more amount of heat flows through the ears of the elephant. The heat from the blood escapes into the atmosphere. Cooling the blood and in turn cooling the elephant. Why don’t spiders stick to their webs? I do not know. Usually, a spider’s web is made of silk threads which are covered with droplets of glue. This glue makes the threads sticky. Now, when an insect flies through web, the insect normally gets stuck to sticky threads. But spider does not get stuck because its legs have tiny hair like structures called setae. When a spider walks on a sticky thread, the setae gets stuck onto the thread. Helping the spider to get grip and support to walk. Now as the point of contact is very less,
the glue has very less surface area to stick. Hence, the spider easily pulls its legs without sticking. Besides this, research suggests that certain spider’s legs are covered with special chemical coating. This coating also helps the legs from sticking to the glue. What is a tardigrade? A tardigrade is one of the smallest animals. It can grow only about 1 millimeter or less in length. However, it is the toughest animal in the
whole world. It cannot be tougher than me. Alright. Now listen. Scientists say that tardigrades can survive in extremely inhospitable environments. But how? When the environment is inhospitable, the tardigrades enter a state called cryptobiosis. In cryptobiosis, they curl up into a ball
like structure called tun. All their metabolic processes almost stop. In this state, tardigrades can survive in
about minus 459 degrees Fahrenheit. And even in about 300 degrees Fahrenheit. They can live deep in the oceans and withstand the huge pressure of water. They can even survive in the vacuum of space and can withstand radiation. Later, when the conditions are stable, they again come back to their normal form.


  • Reply It's AumSum Time May 6, 2019 at 11:00 am

    Did you like the Video??

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  • Reply SADIK SAVER May 6, 2019 at 11:42 am

    Hey aumsum! Nice video, keep making such videos on such topics. I am very satisfy from you and a big of yours. Can you give me a heart. Love from SADIKsaver from India.

  • Reply Pranesh's Performance May 6, 2019 at 11:51 am

    Nice video

  • Reply Matthew Lucas May 6, 2019 at 11:56 am


  • Reply RAGNAR LOTHBROK May 6, 2019 at 11:58 am


  • Reply KRYPTONITE TEC May 6, 2019 at 12:11 pm

    After a long time

  • Reply Sadhana Pagar May 6, 2019 at 12:11 pm

    Do you know that I am a tennis player and AumSum thanks for telling me about the tennis ball .

  • Reply Lisa Rollins May 6, 2019 at 12:13 pm

    NOOOOOOOO! I WAS UP AN HOUR AGO I JUST WASNT USING PC NOOOOOOOOOO 10 likes and ill use aumsum time pc more 😀

  • Reply Prateek Kumar May 6, 2019 at 12:15 pm

    Where is the video on junk food..

  • Reply Aoun Muhammad May 6, 2019 at 12:17 pm

    What do u think the smart aumsum is dumb i hate him

  • Reply Bendy_Is_Scary : Minecraft , Reactions and More!!! May 6, 2019 at 12:19 pm


  • Reply Mukesh Prasad May 6, 2019 at 12:53 pm

    AumSum is Awesome

  • Reply Kyle Ulysses Omosura May 6, 2019 at 1:01 pm

    This is so educational???

  • Reply Irwin Trestiza May 6, 2019 at 1:10 pm

    5:03 did anyone notice the sun just disappeared.. :/

  • Reply Ruhaan raza May 6, 2019 at 1:13 pm

    Happy to see u dumb amsum ?

  • Reply Fire Hydra Rage May 6, 2019 at 1:16 pm

    Plz do what happens when you cut open a rock

  • Reply Demir Tekayak May 6, 2019 at 1:50 pm

    Can you make a video about the food chain?

  • Reply Ali Sher May 6, 2019 at 1:53 pm

    Wow obstacle for air??

  • Reply Heeral Roy May 6, 2019 at 3:09 pm


  • Reply Yash Aggarwal May 6, 2019 at 3:27 pm

    Why you put other thumbnail at first

  • Reply SAGAR AHER May 6, 2019 at 4:03 pm

    Nice video…….

  • Reply Priyanshu Jain May 6, 2019 at 4:34 pm

    I really like your videos but the main problem is sometimes it has repeated topics so u should make 4-5mins of videos and add 3 or more topics.

  • Reply Temp Student May 6, 2019 at 4:47 pm

    soooooooooooo goooooooooooooood

  • Reply himanshi sharma May 6, 2019 at 5:43 pm

    Pls make a video on global warming and how to stop it plz……….#onevideoforearth ???

  • Reply Emilio Run May 6, 2019 at 7:56 pm

    Please bring back smart aum sum please

  • Reply Luchie Papalid May 7, 2019 at 12:12 am

    Why is bowling ball is hard and heavy

  • Reply jim burke May 7, 2019 at 1:13 am

    What is the weather in summer

  • Reply Dilip Kumar May 7, 2019 at 1:13 am

    Why do muscles pain after a lot of hard work out please make a vedio on this

  • Reply Brainy MAN May 7, 2019 at 3:32 am

    repeated segments.
    but the first video was good

  • Reply Puja Gopi May 7, 2019 at 4:55 am

    How dose makeup remover works?

  • Reply Hrishi Patil May 7, 2019 at 7:02 am

    I've never seen tardigrade are they like worms

  • Reply PRANJAL JAIN May 7, 2019 at 10:37 am

    Never thought such simple thing could also have physics in that ?

  • Reply SUHAIL SAMEERUDDIN May 7, 2019 at 12:29 pm

    Helps in dynamic lift…

  • Reply Mix V May 7, 2019 at 1:01 pm


  • Reply Even Ng May 7, 2019 at 1:27 pm


  • Reply jennylyn Untalan May 7, 2019 at 4:28 pm

    5:04 Sun disappears :0

  • Reply Mr Cosmic Gamer May 7, 2019 at 5:03 pm

    The channel name was ' the aumsum time ' or ' smart learning for all' ?????

  • Reply Rakhi Sharma May 7, 2019 at 5:07 pm

    Your videos are the best ?

  • Reply Jintong Tang May 7, 2019 at 10:37 pm

    Nice up move with your videos!

  • Reply Anil Sharma May 8, 2019 at 4:21 pm

    Known I know why I can spin tennis bowl in gully cricket

  • Reply Lord_Bacon777 June 11, 2019 at 9:20 am

    Tennis balls are yellow because Batman’s favourite colour is yellow!

  • Reply Derry Mcrae June 19, 2019 at 1:38 am

    Did you know that reading sucks

  • Reply ツRLTOROBLOXTOGD June 24, 2019 at 3:49 am

    I have never seen a pop rock

  • Reply Mohammed Elhaj June 29, 2019 at 5:25 am

    Aumsum is the show off master

  • Reply NATURAL GAMER July 4, 2019 at 9:58 am

    How cute elephant is

  • Reply rohini siva July 21, 2019 at 12:53 pm

    lot of repeated video s are there..pls avoid it…but I like Ur video s

  • Reply miku hatsune July 26, 2019 at 2:15 am


  • Reply varna varna October 3, 2019 at 1:46 pm

    Are ghost are really???

  • Reply CuteBunnies October 31, 2019 at 11:35 am

    That realistic ball! Cursed image!

  • Reply Moises Alvarado November 16, 2019 at 6:58 am

    Do any of you watch anime?

  • Reply Adheip Srivastava November 16, 2019 at 11:33 am

    You joket

  • Reply Adheip Srivastava November 16, 2019 at 11:33 am

    You are a joker

  • Reply Nur Ahmad Syaikh November 17, 2019 at 2:39 pm

    I Love Tennis Ball ??????

  • Reply GAUTAM SHARMA December 17, 2019 at 1:04 am

    Tennis balls are green to me

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