# Blog posts

### Faking a Galaxy10 June 2021

I have often tried to simulate the rotation of a Galaxy in Algodoo but always failed, today I succeeded. As you move out from the centre the rotation speed should increase but when you get to the edge... more

### Interim EE advice7 June 2021

I thought I would share the advice I just sent to my EE supervisees.Hi;Most of you are pretty much at the same stage so I thought I'd give some general advice. Writing an EE in physics is a bit different... more

### Accidents will happen19 May 2021

I was at an outside party the other night and someone got out a sort of skateboard thing with a motor. One of the teachers had a go and some interesting physics took place. The motor moved the board forward... more

### Music from my physics lab17 May 2021

Every other year the staff at RCN but on a show for the students, this is an other year so we performed. Always used to do do a live performance where I would do some sort of Mr Beanish performance but... more

### Waves on a beach14 May 2021

Mayssen is writing her EE on water waves, she wanted to analyse waves on a beach (she's from Morocco). But how do you measure changing wavelength from a photo taken from the land? The... more

### Mixing our models12 May 2021

A question about this PhET waves simulation made me think about how are use of analogies and models can sometimes confuse rather than clarify. Don't get me wrong, this is a great simulation but maybe... more

### May 20216 May 2021

Just did paper 1 HL. Didn't know that tunneling probability was related to mass, and am not sure if field lines are a visual representation or a theory to explain concepts. ( I'd... more

### The whole story26 April 2021

It starts with a small red ball and ends with a red, a blue and a green one. more

### How to do ratios questions25 April 2021

Approximately 1/4 of multiple choice questions involve ratios. The reason for this is that calculators aren't allowed on paper 1 so instead of calculating final values answers are give in ratios. I use... more

### mind-flash: Gravity and circular21 April 2021

Better late than never. more