This was a great demonstration that I showed my sixth grade students. I had each class work cooperatively to construct one model per class. All five classes successfully constructed and practiced making longitudinal waves. The model helped them understand the transfer of energy through surface water waves. Thank you for the idea and a hands-on way to reinforce the concept.
So amazing, i've been to waterparks before and i've surfed on one of those wave machine, but I never realized it is so easy to make at home. who would have thought it would be so easy
EXCELLENT MODEL. Ive been trying to ficgure out how to create an inexpensive version of the more "professional version/lab grade" for a while now. Shows nearly everything Id like to show about energy traveling through media:) You should make a vid to demo how to use it to show constructive and destructive intereference;)!
This makes it very easy to see that each constituent piece of the medium undergoes simple harmonic motion normal to the axis of wave propagation good demo
Great activity for Physics or Earth Science. You can also demonstrate longitudinal waves by tapping down on the end. Students will observe that longitudinal waves move faster than transverse waves, analogous to comparing P waves and S waves.
This is an awesome activity that makes wave movement visible. We can not use food in our classrooms so I am replacing the gummies with small pieces of clay. I'd like to hear what others are using instead of the candy.
I have the same issue - I am going to try next week using wooden clothes pegs (the kind with the spring in them). Then I can adjust their position quite easily. I was thinking pieces of clay might be difficult because you'd want them to be uniform mass. How did you get on?
When you remove mass the speed of the wave increases, is there an impact upon the amplitude of the wave, or does the amplitude remain constant as it travels from the sticks with candy through the sticks with no candy?
So one of cool things for a more advanced discussion is: what happens at the bound between fast an slow waves? There has to be reflection, not just transmission.
I presume you've seen the black & white AT&T archive material that shows a guy using a similar setup. I wonder if anyone noticed the reflection from the discontinuity you introduced.
It was very good, the best I saw here on RUclips, congratulations. What is the distance between the toothpicks? Did you use glue to attach the toothpicks or put them directly on the tape? Thank you.
The kebab skewers are about 5cm apart - the separation does affect wave speed by changing the mass per unit length, but in practice you don't have to be too accurate. We usually line them up by eye. They're stuck directly onto the tape. Most people then put another layer of tape to sandwich the sticks, which also helps the apparatus last a bit longer, but it's not really necessary and it can change the behaviour of the tape as a torsion spring. So I never bother.
@@markchesterdelacruz4542 In the UK we typically call it 'Gaffer tape', I don't know if that's common internationally. This stuff: en.wikipedia.org/wiki/Gaffer_tape. In practice most brands of wide cloth-ish tape work well, as does duct tape. Elephant and Duck brands are good, but so are many others. Some of the non-branded tapes aren't very sticky and would definitely benefit from a facing layer; it's one of those situations where it's probably worth buying the better tape in the first place. One thing I've never tried is to splice from one brand/type/weight/width of tape to another, while keeping the stick pitch and sweet mass the same. With a bit of faffing about I suspect you could find combinations where the wave speed clearly changes with the medium. Other commenters have noted that you can sometimes observe reflection at interfaces, eg. where you remove half the sticks. I haven't noticed anyone comment that if you send a pulse down a long tape you can observe wavepacket dispersion. I suspect you could even measure it, which might be fun. In 30 years of demo wrangling, this is still the one of which I'm most proud!
mcbrylle angelo canizares I believe this is a transverse wave.. please correct me if I'm wrong somebody! I think it's transverse though because it is moving along with the twisting motion whereas a P wave would be 'pushing' down the tape instead of as we see, again, I think.
Hello , I'm trying to help my daughter with a second grade science project. I feel like we found a great project idea just having a bit of an issue on how to keep it in a way that compliments her age group. What would be a good question to ask for a second grade science fair project using the gummy bear wave machine in regards to sound? What kind of graphs could my second grader make? I was thinking to measure how fast the wave comes back to the starting point when we add energy to the wave machine. Repeat this procedure 5 times taking 5 gummies off each time until i reach the mid point of the gummy wave machine. Thank you in advance😊
I'm trying to figure out how to incorporate collecting data and putting math into this. I'm thinking of having stop watches for groups to see the different time of the waves, but I don't know how to do this. We've studied electricity, magnetism, light, sound, and are moving onto plate tectonics so I want to tie it neatly together. Any pointers?
Very clever and well done! Thanks! You might have even further benefits if you could lace the jelly babies with salt peter and a birth control substance! The students might then pay further attention! Best of luck mate!
This is a classic example of thinking you're doing the "S" of "STEM" when you're really doing the "E" to make the "T". Others, would do the "M" to do the "E" to do the "T". In any case, the "S" is missing. What forces are at work that produce the force differentials that provide the impetus to make the different parts of the 'machine' move as they do? So, what you have in this video is a mobile that looks pretty and might be tasty but, does it do any more 'science' than you'd get by looking at and listening to a wind chime?
Interesting. So it's really the candy that keeps the children's attention span locked onto the wave device. How else would they pay any attention to such unless it's a cell phone with a new and amazing app?
IndustrialDonut No. One is a transverse wave (1D oscillations if we only consider the jelly babies and not the toothpicks that also rotate) and the other, a longitudinal wave (like seismic waves and sound)
It's good to understand wave motion, but in nature what plays the role of the duct tape? In other words, what plays the role of the spinal chord of a wave?
Actually, jelly babies are a different thing. We still have gummy bears but jelly babies are made from jelly instead of whatever gummy bears are made from. :P
+Jorge Peck gummy bears are made of the same thing XD if we are talking about gelatin/jelly. ive never seen a jelly baby in real life but they seem a lot more firm and less springy or something though.
This was a great demonstration that I showed my sixth grade students. I had each class work cooperatively to construct one model per class. All five classes successfully constructed and practiced making longitudinal waves. The model helped them understand the transfer of energy through surface water waves. Thank you for the idea and a hands-on way to reinforce the concept.
They are transverse waves
ANY one else had to watch this in online sience class
Yeah
Lmao yeah
Yurrr
Mee bro
ye
are you gonna eat those?
@Silas Coleman nah i think there mine
@@TheRealDrGiggleTouch No they’re mine
(. _ .)
@@TheRealDrGiggleTouch they're probably expired by now :(
I eat babies
I like your project it was awesome. I did it for a Science Fair and i got a A+. Thank you
I love these simple demonstrations that anyone can make.
So amazing, i've been to waterparks before and i've surfed on one of those wave machine, but I never realized it is so easy to make at home. who would have thought it would be so easy
That was very comforting for some reason
Cuanto mide de largo
EXCELLENT MODEL. Ive been trying to ficgure out how to create an inexpensive version of the more "professional version/lab grade" for a while now. Shows nearly everything Id like to show about energy traveling through media:) You should make a vid to demo how to use it to show constructive and destructive intereference;)!
This makes it very easy to see that each constituent piece of the medium undergoes simple harmonic motion normal to the axis of wave propagation
good demo
"Jelly babies"
Great model and explanation, helps me a lot. Thanks!
Absolutely super video. Thank you. I might do this at school for Science Week.
OH nice.... just a verified youtuber passing by in the comments
Nobody:
My physics teacher knowing full well that its Ramadan: Today class, we’ll be watching jelly babies demonstrating a transverse wave!!!
lmao SAME
same
Jelly babies are haram anyway
Lol😂😂
I'm no Muslim in any way, but I understand the joke without googling
Fantastic. Have to apply this in one of my classes.
Really the most elegant science demo ... Inspiring
This is an excellent demonstration to help students develop an intuition about waves and their propagation.
Great activity for Physics or Earth Science. You can also demonstrate longitudinal waves by tapping down on the end. Students will observe that longitudinal waves move faster than transverse waves, analogous to comparing P waves and S waves.
Who else is presenting this to school kids in 2024??
You can make a mini version of this using regular scotch tape, toothpicks, and mini marshmallows :)
Greg Pasacrita I must do!!!
I want to do it for science experiment but I don't have mini marshmallows. Any substitue?
@@toxicflatulence9437 eraser pieces
@@tiredcat6653 thank you for the idea but I already did the demonstration and I used straws instead of toothpicks and the eraser/marshmallows
thnx man
Iam gonna try it
This is an awesome activity that makes wave movement visible. We can not use food in our classrooms so I am replacing the gummies with small pieces of clay. I'd like to hear what others are using instead of the candy.
I have the same issue - I am going to try next week using wooden clothes pegs (the kind with the spring in them). Then I can adjust their position quite easily. I was thinking pieces of clay might be difficult because you'd want them to be uniform mass. How did you get on?
who else is here cuz Mr. Pauley wants us to make this for science class for some reason
WHat a beautiful and witty demonstration!
my class did it and loved it and they said it taisted good so if your looking for a wave lesson plan this is the way to go
Thank You Sir for making this vedio. This helped me a lot to get marks easily and to know more about the WAVES....👍👍👍
Brilliant! Thanks for sharing
？B
This is really making me want jelly babies
Thank you so much for this awesome video you uploaded in.🙋🌹❤
When you remove mass the speed of the wave increases, is there an impact upon the amplitude of the wave, or does the amplitude remain constant as it travels from the sticks with candy through the sticks with no candy?
fantastic....congrats teacher!!!!
How many sticks did you use? How long is it?
Hey we did that for our physics project too!!
Very beutiful and brilliant! Congratulations!
So one of cool things for a more advanced discussion is: what happens at the bound between fast an slow waves? There has to be reflection, not just transmission.
What a wonderful representation.....I wish you'd been my science teacher!
Pretty cool I love simple science experiments.
I remember making this in school
Can you do a transverse and longitudinal wave with this?
Congratulations, nice for visualise 👏👏
For how long it will keep this motion?
I presume you've seen the black & white AT&T archive material that shows a guy using a similar setup.
I wonder if anyone noticed the reflection from the discontinuity you introduced.
I want to make this into my science fair project. What do you think should be the essential question. Also, how can I make a smaller one?
Cristina Evans Maldonado question do waves travel at constant speeds per given medium
please what the material you used
jelly babies, skewers, and duck tape
Great video and demonstration, love it 💚
How big could you make this?
Thanks for the video.
Exceellent demo.
It was very good, the best I saw here on RUclips, congratulations. What is the distance between the toothpicks? Did you use glue to attach the toothpicks or put them directly on the tape?
Thank you.
The kebab skewers are about 5cm apart - the separation does affect wave speed by changing the mass per unit length, but in practice you don't have to be too accurate. We usually line them up by eye.
They're stuck directly onto the tape. Most people then put another layer of tape to sandwich the sticks, which also helps the apparatus last a bit longer, but it's not really necessary and it can change the behaviour of the tape as a torsion spring. So I never bother.
@@JonathanSanderson What type of tape is needed for this experiment?
@@markchesterdelacruz4542 In the UK we typically call it 'Gaffer tape', I don't know if that's common internationally. This stuff: en.wikipedia.org/wiki/Gaffer_tape. In practice most brands of wide cloth-ish tape work well, as does duct tape. Elephant and Duck brands are good, but so are many others. Some of the non-branded tapes aren't very sticky and would definitely benefit from a facing layer; it's one of those situations where it's probably worth buying the better tape in the first place.
One thing I've never tried is to splice from one brand/type/weight/width of tape to another, while keeping the stick pitch and sweet mass the same. With a bit of faffing about I suspect you could find combinations where the wave speed clearly changes with the medium.
Other commenters have noted that you can sometimes observe reflection at interfaces, eg. where you remove half the sticks. I haven't noticed anyone comment that if you send a pulse down a long tape you can observe wavepacket dispersion. I suspect you could even measure it, which might be fun.
In 30 years of demo wrangling, this is still the one of which I'm most proud!
How much stuff did you use
is this transverse wave or longitudinal wave??
mcbrylle angelo canizares I believe this is a transverse wave.. please correct me if I'm wrong somebody! I think it's transverse though because it is moving along with the twisting motion whereas a P wave would be 'pushing' down the tape instead of as we see, again, I think.
This is a transverse wave because the energy is applied perpendicular to the direction of motion.
Michael McPartlin does transverse wave travel through air ?
Thank you sir.. It really helps me for my module
Really...amazing... I'm inspired
what type of wave is this?
transversal
A very nice demonstration, but eating in the lab........
pklongutoobe lol
😂
Can I connect the end of the duct tape to a speaker to see the sound waves? I was wondering would that work?
Most soundwaves are quite a bit too fast to see. They are in the hundreds or thousands of Herz.
will this work if you play music or have a frequency go through metal?
i love everything about this! :)
Great video - thanks:)
The Doctor would really love this
Is this machine wave considered transverse or longitudinal
great work, helpful
Hello , I'm trying to help my daughter with a second grade science project. I feel like we found a great project idea just having a bit of an issue on how to keep it in a way that compliments her age group. What would be a good question to ask for a second grade science fair project using the gummy bear wave machine in regards to sound? What kind of graphs could my second grader make? I was thinking to measure how fast the wave comes back to the starting point when we add energy to the wave machine. Repeat this procedure 5 times taking 5 gummies off each time until i reach the mid point of the gummy wave machine. Thank you in advance😊
Awesome im off down the shops!
sir what is the required material in this demonstration
Ji Vera level
Brilliant. Thanks
This is Great!
Great! Thanks for the idea!
it's brilliant!!! Thank you, Sir)
It's so great, thanks for this video. I Will try it
I'm trying to figure out how to incorporate collecting data and putting math into this. I'm thinking of having stop watches for groups to see the different time of the waves, but I don't know how to do this. We've studied electricity, magnetism, light, sound, and are moving onto plate tectonics so I want to tie it neatly together. Any pointers?
me, fasting in ramadan:
my teacher: here is a free trial of F O O D
Ke what sticks?
amazing DIY machine
very creative
Very clever and well done! Thanks! You might have even further benefits if you could lace the jelly babies with salt peter and a birth control substance! The students might then pay further attention! Best of luck mate!
This is a classic example of thinking you're doing the "S" of "STEM" when you're really doing the "E" to make the "T". Others, would do the "M" to do the "E" to do the "T". In any case, the "S" is missing.
What forces are at work that produce the force differentials that provide the impetus to make the different parts of the 'machine' move as they do?
So, what you have in this video is a mobile that looks pretty and might be tasty but, does it do any more 'science' than you'd get by looking at and listening to a wind chime?
Is this a transverse wave?
yes
Good idea
Hi,
How does it demonstrate light waves? I'm really confused. Can anyone help?
0:24 1:16 1:51 2:02 2:27 2:45 3:25 3:51
Jelly babbies
Interesting. So it's really the candy that keeps the children's attention span locked onto the wave device. How else would they pay any attention to such unless it's a cell phone with a new and amazing app?
an awesome demonstration
I am such a nerd. I want to build one just for funzies now lol.
I just waited for him to say "jelly baby" again and again.
BRILLIANT!
does it produce longitudinal waves?
It should but i am guessing they will be a lot faster considering that the duct tape is a lot more tense if you try to manipulate it horizontally
what a video sir ji
3:40
so there you have it. a wave machine made of impaled jelly babies
When a wave is transferring energy into a medium of less mass from a medium of greater mass, the wave length increases immensely, as shown just there.
Todd Gobbett isn't it density?
Todd Gobbett
Uhm yes? but I don't see how it's related to my comment.
IndustrialDonut
Yes you're right! In case of 1D waves, it's the linear density
Rex Galilae Is a 1D wave a P-wave? Is this model.. that?
IndustrialDonut
No. One is a transverse wave (1D oscillations if we only consider the jelly babies and not the toothpicks that also rotate) and the other, a longitudinal wave (like seismic waves and sound)
I wonder if after this quarantine this video will become some what popular because of the teachers
Now that's what I call a creative demonstration that Mexican students shall learn from!
Nice!
shocked that this is still being watched even in 2021
It's good to understand wave motion, but in nature what plays the role of the duct tape? In other words, what plays the role of the spinal chord of a wave?
My physics class watched this, and some people laughed when the guy said jelly baby
I love you want to have your jelly babies. Thanks for sharing this is exactly what was looking for with a clear explanation
real science teacher
You’re a genius you should get a Nobel prize
How to build?
can we use nothing other than gelly
We're using gum drops. They taste better
will this work if an earthquake occurs will it move ?
In America we call them Gummy Bears LOL
Actually, jelly babies are a different thing. We still have gummy bears but jelly babies are made from jelly instead of whatever gummy bears are made from. :P
+Jorge Peck gummy bears are made of the same thing XD if we are talking about gelatin/jelly. ive never seen a jelly baby in real life but they seem a lot more firm and less springy or something though.
and in America you guys call football soccer
This is cool I wonder when I will learn this in school