Tag Archive for: waves

Tinkering Thursday: 18th December, a tale of two wave types

A simple Tinkering Thursday this week as we start to – let’s be honest – tidy the office so it’s not quite such a heap when we return in early January. Carol produced a lovely little ripple tank which had apparently been in one of the many cardboard boxes strewn around the office, and we proceeded to set it up.

Joe and Carol set up our new ripple tank

Joe and Carol set up our new ripple tank

We’ve more testing to do with different depths of water, but we managed to get some pretty decent-looking wave patterns and interference effects, as you can see at the top of the post (click the image to expand it). It’s a nice piece of kit, and we look forward to playing with it experimenting further.

I outsourced my tinkering for the week, taking my car to the garage to treat it to a new wheel bearing for Christmas. This post is late because I had to run out of the office early to collect it, which you really don’t need to know but hey, human detail and open communication are the keys to being approachable. I’m sure I read that somewhere.

Joe, meanwhile, had a busy afternoon. Yes, that’s our camera strap around his head to hold his normal desk phone in place so he can continue to monitor a conference call on mute, whilst talking on his mobile. Who needs a bluetooth earpiece?

Joe goes hands-free so he can operate a second phone for multi-tasking conversations.

Joe goes hands-free so he can operate a second phone for multi-tasking conversations.

Tag Archive for: waves

Science for Families: Sound

Pardon? What? Is this thing on? YOU’LL HAVE TO SPEAK UP, THIS IS THE PAGE ABOUT SOUND!

Jelly Baby Wave Machine

The legendary jelly baby wave machine started out as an item in a children’s TV show back in 2004, and is now seen in classrooms around the world. It’s a terrific demonstration for teaching wave motion: every component is familiar, they’re put together in an extremely simple way, yet the behaviour is surprising.

I made this film a good few years ago now, and it’s been available from the National STEM Centre’s excellent eLibrary, where we think it’s been the most popular single resource. However, you had to be logged in there in order to download a rather poor-quality version. Happily, the National STEM Centre have launched a new YouTube channel, and they’ve uploaded the original high-definition film in its full glory. All the other physics demonstration films I’ve made with teacher and film-maker Alom Shaha will follow over the coming weeks.

If you haven’t tried the jelly baby wave machine with your classes, do give it a go. There are support materials available from the eLibrary, and we think you’ll like the impact it has on your students.