Added: 5 years ago
From: stenquist1
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  • Great Observation. I sometimes simplify the explanations of my demos to make the concept understandable to people with less scientific understanding, hence your response to me. You have aq greater knowledge.

    You have pretty much summed up the answer. Air pressing down upon the newspaper approx A back of the envelope calculation shows that there is about a ton of air pressing down on about 1 square foot of flat surface. Assume that the new2spaper surface is 2 square feet.

  • Science describes phenomena, the phenomena exists whether it's described or not.

  • Its cool how much things in the world are tied in to science. Great video!

  • @Zman2121211

    Thanks for the kind words

    Bob

  • I'm suspicious of the idea that air pressure is responsible for breaking the ruler since air pressure on the newspaper is acting in all directions, not simply from above. Perhaps instead the amount of air that needs to be moved when the paper is lifted creates additional work since the newspaper is not very aerodynamic. Either way, I think it would be incredibly interesting to see this done in a vacuum. Doing this under water while changing the water pressure would be interesting too.

  • @Joe72521

    Suspicion is a good thing. This is what allows science to move forward. There is a very little air under the newspaper as it is resting atop the table. Consequently there is no equal air pressure on the opposite side of the newspaper. Since there is hardly anything pushing the paper up from underneath, the main force is air pressure from above, which allows the paper to stay flat enough until it breaks.

  • Just learn the science behind the magic and the rest or your life will be boring. Dont listen to this guy, keep life a mystery as long as possible, stay stupid.

  • Heresy and witchery of the worst kind!

  • science rules the world..

  • SCIENCE = NINTENDO HOLY CRAP

    This guy rocks.

  • Kinda funny that his mention of "Nintendo" is relevent again today - the video was probably made before the "PlayStation era"

  • As they say, whoever they are, "What goes around, comes around."

    Professor Bob

  • this is pretty cool!!!! i never knew tht!!!!

  • I wish he was my science teacher...

  • this guy reminds me of robert duvall for some reason

  • haha same here

  • very entertaining

  • I am instantly subscribing to you! I love physics tricks such as the levitating lemon and flying forks.

  • nice video :D

  • Thanks.

    A new video will be up within the month.

    bob

  • I wonder what kind of position you would have held in ancient Babylon, I have been briefly studying the system back then. It was much more "alchemical". Science and "magic" were indivisible. You may not be as flashy as David Blane and Criss Angel, but I think you are performing a much greater service, especially for young people and the young at heart. When I have kids your books are going to be in their libraries if they are anything like me. Intrigue is the key to having knowledge stick.

  • Thank you!

    Back in ancient Babylon I probably would have been a priest's assistant, apriest, a god like figure or stoned to death for messing around with god like duties. :-) Please keep watching. We are in the midst of preparing a new video that shoulod be up and running within 2 weeks.

    be well

    bob

  • I remember when I was a kid I read that cup trick in one of your books Bob, and I was mad because we didn't have any plastic cups to waste inside the house. Now I'm finally getting to see it done by the master!

  • Thanks for the kind words. You have made me realize that too many young people take instructions too literally. The trick can be done with a cardboard or styrofoam (r) cup (though you don't actually see the water in the cup) or a real glass, though you may not be able to drill through the glass. There are always methods of adapting. I will remember this as I write instructions in the future. Thanks for the input.

    Professor Bob

  • Awsome!

  • LOL! You should do gigs at kids birthday parties! If I had kids I'd choose you over some clown anyday!

  • The video is great, of course. I am a 6th grade science teacher in south Georgia (US). I am wondering how I can take advantage of your expertise?  U-Tube is blocked at my school.

  • Hi

    Thanks for the vote of confidence.

    You can download the YouTube video onto a disc and bring it into your classroom.

    I also have a few performance videos for sale at $15.00 each and some of my science magic books as PDF files at $10.00 each.

    Thanks for asking.

    Professor Bob

  • lmao this is a very important science term please remember ...... this is a leak

    i wish science was this fun wen i went to school all those years ago

  • Thanks for the kind words

    bob

  • haha ya thanks man for posting the vid i enjoyed it. im still amazed at the newspaper trick even though it makes perfect sense

  • I use to do that trick when i took baths as a kid. put the cup under water upside down turn it a little so water enters the cup, pull the cup to the surface so that the rim is just touching the end of the water in the tub. Then the cup would sit half full. I always wondered why the water wouldn't fall. but then i got older.

  • whats a VCR?

  • LOL

    bob

  • its like a dvd player except it plays vcrs, the old black rectangular movies

  • nice dude ima try it

  • I enjoyed your video, If you need help getting your video exposed i use a service at Tubeviews . Net They offer views, ratings, and comments. They helped my video get ranked on the first page

    this is awesome

  • What an all-round fun guy

  • i love scince..and the most i love in it experements

  • i think he has a sponge in the cup, so when he tips the water into the cup, it absorbs the water and none falls out, thats my guess.

  • isn't science wonderful?

  • Hey, I rmb that trick when you poured the water into that white cup and when you upside down it ,the water had disappear. I also remember that my teacher gave me a kind of chemical that were used in diapers. It's a kind of chemical that absorb water and turned it immediately into a solid. Thanks for your show. I'm not sure whether you did the same thing.

  • i think youre right

    but it isnt a chemical, its just a super absorbent polymer called sodium polyacrylate. it can be used in potting soils to absorb water for the roots to absorb

    great vid i really enjoyed it

  • sodium polyacrylate is a chemical. A chemical reaction does not take place.  Just absorption.

    bob

  • wow this vid loads fast even with my slow computer and slow connection(especially fast for 7 minutes!)

  • :-D

  • cool

    how do you make the water dissaper from the cup?

  • very very very very cool... thanks!

  • awsome!!!

  • Thanks!

    professor bob

  • wow great vid

  • wow so cool i love science very much well done.....

  • This video was very helpful. My Physics partner and I are going to perform the air pressure trick in our class.

  • Thanks for the note. I'm pleased that i could be of help.

    professor Bob

  • here it is: you put a chemical in a metal bread pan, put a liquid chemical in it, set it afire, here's some good stuff you can do with it: put any food coloring on it and it will change color, it's very interesting

  • ._wOw...

    hE's grEat...

    i wiLl do thAt in oUr pHysiCs cLAss.,

    thAnKS..

  • Cool video!!!

  • I remember being shown tricks like this. I became obessed with them and learned a whole lot about science.

    Years later, I consider myself to be a very intelligent person.

    This video is great!

  • most people that consider themselves to be smart aernt... and im a genius so i would know lmao :P

    just messin around

  • It takes a smart person to realize that he/she isn't so smart. :-)

    Professor Bob

  • NICE! =)

  • Wow...Is this really Professor Bob? That is amazing!!! I wish you were around when I was going to school!!! I always explain to my daughter that science is a part of life, and now it is her favourite subject!!!!!!

    Thank you!!!!!!

    :)

  • Oh my god! Home Matters... haha! I remember being bored at home during summer break and HATING that show when it was the only thing on :P

  • Hopefully I made the show a little less boring.

    :-)

    Professor Bob

  • I didn't catch this episode, but this would have been one that I would have liked! I realize that first comment may have come across the wrong way. Call it YouTube-itis! Thanks for the reply!

  • great stuff professor, I think its a really cool way to educate the young !

  • Thank you. I hope the youngsters feel the same as you.

    Be well

    Professor Bob Friedhoffer

  • Actually Im new to magic and feel like a big kid myself playing around and find it fascinating how science can be used ! thanks again professor !

  • I've always liked the way you can manipulate a vacuum to make water seem to 'follow your command'.

  • mizgog020

    Magic is the seeming ability to manipulate the laws of nature.

    Thanks for the comment.

    Professor Bob

  • Nice done Professor Bob. greetings from Equator.

  • trusko

    Thank you. Where on the equator? South America, Africa, Asia?

    be well

    Professor Bob

  • This is a neat video. I actually found out that water trick on my own when I was younger, just fooling around with holes in the cup. Making people spill over there shirts and I put the paper on and my finger was on the hole, and someone tried to knock the cup out of my hand. It I guess you could say, spun on my finger and turned upside. But it didn't leak. I immediately dropped the cup because I was young and had no idea what I had done. Once again. Nice video.

  • BigBlueMonk3y

    Your idea of using the trick as a practical joke is a new one on me. Thanks.

    Professor Bob

  • Cool! I'll have to try that water trick!

  • Make sure that you do the water trick outside or over a sink. Doing it over the living room carpet is a bad idea. :-)

    Professor Bob

  • actually. I'm still not sure I understand it lol. I mean, if your finger's blocking the hole then how is that any different from the hole not even being there?

  • The reason that the hole is there is so that the water can 'magically' fall at your command.

    Professor Bob

  • have to try it too

  • batangcolon,

    try the tricks. They are fun to do and still amaze me.

    Thanks

    Be well

    Professor Bob

  • hi bob i really like your stuff please tell me how to to this

  • Thanks for the kind words. lokk for my books in your public libraries. they will be available shortly in e-format,

    I'm available for personal appearances.

    Please look at my website sciencetrix dot com

    Professor Bob

  • I'm confused at 3:29.. he didn't cover the white cup with anyhting? What happened there? He only explained it with the paper over the top...

  • i think that this is really great, capturing the wonder of science in youth is quite a hard job these days

  • Dear Onixfury

    It pleases me that I can help someone appreciate the joys of science and scientific discovery.

    Thanks for the note.

    Professor Bob

  • Ok I am 14 and I love physics chemistry and you fuse it with humor which is the best I really admire people like you.

  • Thank you so much for the kind words.

    If you like my work, please take a look at my website

    sciencetrix dot com.

    Be well

    Professor Bob

  • I love Professor Bob.

    He is awesome! :)

  • I am humbled.

    Thank you

    Professor Bob

  • OMG, I love this video!

    Professor Bob is AWESOME!

    I wish he can come to my school, but I don't know how he can come. :'[

  • Hi GoDurem

    It is possible for me to come to your school.

    I do make personal appearances.

    Have a science teacher or PTA parent go to my website - sciencetrix dot com

    for information on how to arrange it.

    Thanks

    Professor Bob

  • I love science so much i plan to be a kind of person who researches and figure things out like a scientist but how did u do tht thing where u made the water dissapear from the cup?? btw ur so cool like i can tell u have such a way with kids plus u seem really nice u should come to my school!

  • Thanks for those nice words and I'm pleased that you are asking for answers. The water never really vanishes. It only looks that way. The water is inside of the cup but has been concealed with a chemical. If you want to know more you will have to go the library and take out some books on magic, chemistry and physics, maybe even some of the books that I have written.

    I am available for school visits. Have your school PTA look at sciencetrix dot com

    Thanks

    Professor Bob

  • hw duz he do the trick at 3:29

    i really wanna know...

    plz sum1 tell me

  • To both fizikonline and jonhaldo

    Thank you for the kind words.

    bob

  • cool video

  • nice video

  • dude ,you rock

  • Waxieman111

    Thanks.

    Bob

  • Nice! How i wish i could do that , its difficult?!

  • Dear Seahip,

    It's not difficult. Just takes a bit of practice. Go to your library, take out some of my books, see which items you like, and practice. They are all relatively easy.

    Or, I am available for personal appearances to present programs, student workshops, teacher professiona development, community center shows, etc. Please look at my website for more information. sciencetrix dot com

    Thanks for the note

    Professor Bob

  • I love Science

  • this man is too funny :-((

  • Excellent! This is definitely the way to teach science to children. They say we have a 95% scientific illiteracy rate in America, and I've always said that the reason is that schools are teaching dry facts and figures. Facts and figures are important, of course, but learning needs to be fun.

  • is stenguist1 really bob friedhoffer's yt account? or is it just a carrier for some vids?

    what i mean is is bob the controller of stenguist1?

  • Thanks.

    If you wish to learn more about me search youtube for me FRIEDHOFFER and take a look at my other video. PS I've lost 40+ pounds since that video was shot. :-)

    Be well

    Professor Bob

  • i could see my self as a high school science teacher doing stuff like this, lets face it class these day's are boring..

  • Thanks for the kind words. lokk for my books in your public libraries. they will be available shortly in e-format,

    I'm available for personal appearances.

    Please look at my website sciencetrix dot com

    bob

  • Science is awesome! :D

  • no, its not

  • yes, it is

  • This was really cool! I am soooo going to show off that hole-in-the-cup trick to my friends, that should be fun. I never knew science could be this much like magic tricks... Now I should have a little more respect for science class! Great video, 5/5.

  • good for you.

  • brilliant

  • science is awesome....but there is also quantum physics which is a little different than just physics and i think it is a little more interesting.....but i love ur video! :)

  • Hi tobydj

    Thanks for the kind words and the comment. Quantum physics is not different from science and the rest of physics, just a part that I didn't talk about in the video. I have some demonstrations (that I think are wonderful) that demonstrate certain quantum principles such as tunneling and entanglement. There are other demons that I have that demonstrate a bit of sub-atomic theory, relativity, and even thoughts on string theory.

    be well and have a happy holiday.

    professor bob

  • very cool video, it was enjoyable...:)

  • Thank you.

    bob

  • As long as we remember that physical laws don't define how nature works. It's nature that defines the laws. There's a big difference.

  • hey im learning that

    inertia

    my teacher is gay

    all she does is make us read and expect us

    to learn

  • funkyxmango

    Thanks for the note.

    Inertia is one of the many cool parts of science. If you don't read, as your teacher wants, you will be missing a great part of life. Learning through reading can help you know many things, how to: drive, pilot a plane, use programs, play a musical instrument, lead a more comfortable life, etc.

    Professor Bob

    PS For your own good not use negative comments of the teacher as you did. It is meaningless in the context of your note.

  • Agreed. Funkyxmango, your teacher might not be as entertaining as the guy in this video, but not everyone has that sort of talent. She's probably doing her best. If you keep reading and also checking out cool science videos, your understanding will increase to the point where you will probably be able to make your own cool science vids if you want.

  • wow man youre great id never think science would be this fun keep the good work

  • Thank you

    bob

  • hi.please help me, we need to perform physics demonstrations like these. how did you do all these tricks?

  • Best way to learn how to do the tricks is to go the library and take out my books or science/magic books by other authors.

    bob

  • Hi Bob, may I call you Bob? First thing I'd like to do is say thanks for showing to kids how entertaining science can be. Not many people realize that science is the only profit bringing thing. Second thing is, try to show the real side of science, make a wand that works like a Tesla coil (it's up to you to make it effective and miniature) or that destroys walls with the help of a resonance. That would be a hell of a "magic", would it not?

  • i loves cience..i like magic too

  • You and I are in agreement.

    Thanks bob

  • Insane, my science teacher is so freakin awesome! He blows stuff up every class just to try to scare the girls! ahaha its great! Science owns

  • SCIENCE RULES!!!

  • I'm 45 years old, have an extensive science education, and YOU just made my day! Thanks so much for the smile!!

  • And you wombatstew - have made mine.

    Thank you.

    bob

  • i did not really get the egg one

  • The egg trick is a demonstration of Isaac Newton's 1st law of motion. The egg, being massive (you can call it heavier) than the cardboard tube, is more difficult to get moving than the lighter weight tube, tends to stay in the same place. When the tube is knowcked out of the way, the only force acting on the gg is gravity, which makes it fall into the cup of water.

    I hope this helps

    Bob

  • I probably could have went some where in life if this guy was my science teacher.

  • Man if you were my teacher i would love science but i have an idiot teacher and i dont understand a think:(

  • Hi

    Sorry that you feel that way about your science teacher is who is probably working to the best of his/her abiity. Try to learn the science despite the teacher. It (science) can be so rewarding and so much fun despite a teacher you many not care for.

    bob

  • wow. I'd love to have a science teacher like you.

  • Thank you.

    Feel free to look at my website

    sciencetrix(dot)com

    It is a work in progress and is being upgraded.

    bob

  • hello there, can you help me at my physics project. i need to demonstrate at least 1 magic at school. if you can give me some procedures, i'll be so grateful.. ;) or just sites that offers magic experiments. i hope you can help me..this video is so awesome, i love physics .. including all those computations..wuhoo.. ;) i'm so intrested at science..

  • I am leaving the country shortly and my time is limited. Please answer ASAP so I have a few days to come up with a proper response.

    I am willing to help point you in the right direction. If you can get to a public library try to find one of my books. If you can not what are of physics do you wish to include? air pressure, center of mass/gravity, electro magnetism, properties of matter, optics, sound, or ...? What level of physics? High School or college?

    bob

  • lol we lurn this stuff in 4 grade science...

  • science is always fun and interesting..i appreciate what you're doing, Sir. keep up the good work :)

    5/5

  • this is awesome and i love science

  • Hi nice I gave you 5 stars!

    James

    freemagiconline(dot)info

  • science is fun most ppl like because they get to light things on fire i like it for everything!

  • There are a lot of reasons to like science. Not everyone likes it "because they get to light things on fire," there are other reasons. But, if that's your reason , please try to be safe.

    Professor Bob

  • youre very entertaining and knowledgeable, respect to you sir.

  • this is great but i will go test his theory about the cup right now

  • This is wonderful. The spirit of science lives. You give me hope that my program is a success. Experiment away. You are testing a hypothesis to see if it will give the answer you seek. Please tell us your results.

    Bob

  • wow ,that guy has a realy good way of teaching and explaining things ... 5 stars

  • thanks for the kind words

    bob

  • five stars from me to

  • thank you so much

    bob

  • Awsome!!! kids learn so much when its fun well done.

  • There are so many areas that compete for the attention of children (adults too). I am pleased that I can bring the wonders of science to all in an interesting manner.

    Thank you.

    Bob

  • 5 starz from me bra

  • 5 stars willingly accepted.

    Thanks

    bob

  • fun

  • I'm pleased that some people think that science can be fun.

    thanks

    bob

  • I'd like to know how you made the water dissapear from the cup. But a great video and very educational for the kids while at the same time fun for them.

  • Thanks for the kind words to you and everyone else who has responded. Wolfrevan, why don't you drop me an e-mail with wolfrevan in the subject line and perhaps we will chat about the effect.

    Be well

    Professor Bob

  • its the first trick ive ever learned if you wanna know sen d me a message seriously

  • a sponge at the bottom of the cup maby ;)

  • really good

  • Great video!

  • that really cool

  • Thanks dextor.

    keep on looking at my site.

    by mid-september I should have at least one more clip to view.

    bob

  • nice i like how you incorperate magic with science

  • thanks for the kind words.

    Bob Friedhoffer

  • Cool

  • hey nice! i gave you 5 stars! hey you should check out my awesome card trick tutroial its cool and it might help!...leave comments!!!

  • your a great teacher!props, there just oen the thing at the beginning how do u make the wand appear out of a cloth. Thanks for the science lesson!!!

    5 stars

  • Thanks for asking. The trick in magic catalogs is called an appearing cane and may be purchased from magic stores for anywhere between $50 to $75 for a good metal cane. The platisc ones do not work well. I can't tell you the secret behind the trick but will say that the trick works because of the scientific principles of potential and kinetic energy, plus lots of practice. Thanks

    Professor Bob

  • man my college has stupid ass teachers... i love experiments like these.

  • They were probably not stupid. Probably good physicists, just poor teachers.  Thanks for the sentiment.

    Professor Bob

    PS I am available for personal appearances for corporations, schools, museums, libraries, etc.

  • Clever Stuff

  • I am blushing at the compliment. Thanks

    Professor Bob

  • i love it