Thank you.

It’s low power enough to feel safe without one 😄

Thank you for that, we thought people might want to hear the resonance too. But you’re right, we could mix the audio better. Thanks again for the feedback

Requires further reading this one 😅

Spooky

Grazie

You can use a tape measure / metre ruler secured to the desk, and run the receiver along it to measure the positions 🙌

It does sound really good when moving quickly. We find the same thing in a standing wave.

Sorry can you please comment further?

Thanks 🙏 great comment! If you love resonance you should check out our resonance system… lots of cool things to do with that too 😀 no video on it yet though I’m afraid.

@MikeRaphson thanks for your question, Mike! You can create your look up table in MS Excel. This gives you theoretical values of the resonant frequencies you should be able to find using the equation f = nv/2L. For the first harmonic type =1*v/2L Second harmonic type =2*v/2L Third harmonic type =3*v/2L And so on. Where v = the speed of sound in air in m/s, and L is the length of the tube in m. Please let us know if any further help is needed! 🤓

Where are you based? If you send a message from the website we can sort you out Lascells.com

Not in length, but we do a larger bore amplified unit that’s real good for the Kundt’s tube experiment.

You could technically make one as large as you want. If you've ever yelled into a tunnel to hear the echo, you used an extremely large resonance tube. Being so wide, the resonant frequency would just be quite low. At 60hz, the wavelength of sound is 5.5 meters (around 20 feet). You would also need a more powerful sound source, since you're using such a large tube, compared to the one in the video. But, you could absolutely find the resonant frequency and do the exact same experiments. In fact, you don't even need sound. You can use light in a reflective tube and get similar results because light acts like a wave. Or you could do it with waves in water. That's why I love wave physics. It can be applied to so many different things. Electromagnetic waves, sound waves, waves traveling through water, electrical waves like the sinewave coming from mains outlets. Even matter itself acts like a wave.

Thanks for comment. We find your feedback very valuable and will certainly lean into the science more.

@@ivolol we have some mounted components we can hook it up with… neat idea 😎 keep ‘em coming!

Thank you, that’s some great feedback. We’ll pass that on keep the videos coming.

It can certainly be used for ks2 objectives and more. Younger students might want to use it to balance / lift something like a water bottle. While the mass positions can be used for more in-depth investigations

It will work with 100g masses, however the holders / 10g masses provided might throw things out a bit. You could position without or just take into account. Spacing might get a bit tight if adding two close together.

Sure is 😄

Thank you 🙏 more to come

So you actually counted?

@@LascellsScience Sure, but then when I watch my local TV weatherman, I count the times he says "Y'know" in his forecast delivery. One of my local music DJs even holds the world record for number of times he says "uuh" during a two-hour radio show. And, your reply got a chuckle, beginning with "So". I like your sense of humor.

We currently only do a C but maybe we should do others….. what would be your preferred options?

To be a further pedant. in a transformer, an electromotive force (EMF) is induced in the secondary coil due to the changing magnetic field from the primary coil. This induced EMF causes a current to flow in the secondary coil, but only if the secondary circuit is closed. It’s important to distinguish between the induced EMF and the resulting current, as the EMF is the cause, and the current is the effect when a complete circuit is present. Although measured in Volts, it’s not to be confused with a Potential Difference, also measured as a Voltage.

Nice spot! I’ve switched the title to match what was said

Thanks for adding detail

The word is pedantic. 😉

@@MichaelScarborough423 a pendant is a pedantic person. Look it up

Nice to have you on board! Wait until you see are video for people who love graphs 😃

Yes you can 👍 the more turns on the coil the better

Yes 😂 for use in labs not trains….

The voltage readout works well from the CRO sockets to a multimeter.

Thanks Garth, glad you enjoyed it 😀

In reality, concepts didn't come first. Real life observations came first.

The sound is generated by the diaphragm however you do need a way of fixing the diaphragm, coil and magnet in their positions so that’s where the base / bowl comes in.

The magnetic field will be generated in the coil irrespective of the permanent magnet. The role of the permanent magnet is to provide a field for the coil to interact with, to produce attraction or repulsion, thereby moving the coil and attached paper diaphragm. Hope this helps!

It’s an unreleased track from an album in production. We’ll let you know as soon as it’s available somewhere.

Isn’t it just

It’s the only explanation!

Thanks! Had great fun trying to work out what we collected 😃

Glad you like it!

Not sure what you mean by this? :) happy to try and answer...

Our pleasure!

Yes, same size but stack better. Well spotted 😀

Thanks!

Our speaker kit is a great activity for all ages, who doesn’t like making music 😀

Maybe next time…

I was thinking that