Share this page!

Rhett Allain Profile picture
Twitter logo
6 Jun, 6 tweets, 3 min read
New #DIY #Science video - building a very simple (but working) ribbon microphone.

For one version I use #LEGO, aluminum foil, and hard drive magnets.



Not directly from #MacGyver - but related.
BTW - this website is great for recording and analyzing simple sounds

listeningtowaves.com/sound-explorat…
Here is a carbon mic using a soda can and a paper clip

What about another paper clip mic? This one doesn't use carbon but rather contact resistance from a paper clip touching other paper clips.

Oh? You need EVEN MORE microphones? This dynamic microphone might be the simplest and it mostly works fine.

I have at least two more microphones to build - but that will be in the near future. You will just have to wait.

• • •

Missing some Tweet in this thread? You can try to force a refresh
　

Keep Current with Rhett Allain

Rhett Allain Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @rjallain

Rhett Allain Profile picture
3 Nov 19
I'm starting to put together my presentation for Star Wars physics lecture. It's difficult to pick just a subset of all of my stuff - but I think this is going to be good.
2/ Here is my tentative list. Check me. Are any of these dumb? Am I missing something great?
3/ Speed of a blaster bolt. I tend to include this one in most of my Star Wars talks because I love it.

Also, this data was used in the @mythbusters Star Wars episode.

wired.com/2012/05/star-w…
Read 13 tweets
Rhett Allain Profile picture
12 Aug 19
Oh, everyone is going crazy over this Simone Biles tumbling pass. You need some #physics physics to go with it? I got you covered.
1/ Here is the physics of a flip with a twist, it's about angular momentum.

wired.com/2016/08/physic…
2/ Once Simone is in the air, there is no external torque on her so her angular momentum vector must be constant. However, angular momentum and angular velocity DO NOT have to be in the same direction. I know, that's crazy.
Read 16 tweets
Rhett Allain Profile picture
19 Jul 19
THREAD. In honor of the #Apollo50th anniversary of the moon landing, here is a thread of #physics posts related to space travel. @nasa @esaoperations @ESA_History
1/ I will start with my #physics #estimation - what would be like to ride a bike to the moon? How long would it take? How many sandwiches would you need to eat? More homework included.

wired.com/story/how-long…
2/ Video analysis of the lunar lander launching off the surface of the moon.

wired.com/story/the-phys…
Read 23 tweets
Rhett Allain Profile picture
21 Jun 19
Yesterday in #physics class, I had to have the discussion about learning vs. telling the answer. I got to use my favorite Karate Kid analogy - "wax on, wax off" to emphasize that sometimes you have to do tedious things to learn.

wired.com/2013/10/tellin…
2/ What happens when you just tell students answers? They have trouble learning complicated concepts. Personally, I love this (older) video showing students trying to explain the phases of the moon and the cause of seasons. It's great.
3/ Another point I mention to students.

If #physics was as easy as me just telling you the answer, I promise you I would do that. I'm not trying to make physics hard just for no reason. Physics is difficult on its own accord (and honestly, that's what makes it awesome).
Read 4 tweets
Rhett Allain Profile picture
14 Mar 19
MEGA THREAD. Happy #PiDay to everyone.

Let's start with the simplest calculation of Pi - the ratio of circumference to diameter for round objects. wired.com/2014/03/calcul…
2/ If you want to do this calculation of Pi, just find a bunch of circular objects of different size. Use a string to wrap around and measure the circumference and then measure the diameter. Plot C vs. d - the slope is PI.
3/ But wait! #PiDay is only Pi in the USA where we use date format of month/day/year.

For everyone else, today is 14/3/2019 - which is NOT Pi. I suggest the other Pi day is July 22 (22/7/2019) since 22/7 is a great fractional representation of Pi. wired.com/2011/03/what-i…
Read 20 tweets
Rhett Allain Profile picture
26 Dec 18
THREAD. Need some #physics ideas to go along with your holiday presents? I have you covered.

Here is my list of some cool physics experiments I have done with toys and stuff.
2/ How fast are #Nerf darts? Video analysis included.
wired.com/2011/06/how-fa…
3/ What about the speed of the #Nerf vortex disks? wired.com/2012/01/the-fl…
More #videoanalysis
Read 15 tweets

Did Thread Reader help you today?

Support us! We are indie developers!

This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Too expensive? Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal Become our Patreon

Thank you for your support!

Follow Us on Twitter!

Like this author's thread?

Get emails when @rjallain has new unrolls!

Check out other threads from @rjallain!

Read all threads by @rjallain

:(