Author Archives: mrmackenzie

total internal reflection⤴

from @ fizzics

Earlier this week, we used semi-circular perspex blocks to investigate total internal reflection. I’ve put together a short video showing total internal reflection in a semicircular block and a perspex model of an optical fibre. total internal reflection from mr mackenzie on Vimeo. There are some nice ray diagrams explaining total internal reflection on BBC ... Read moretotal internal reflection

using linest to obtain a gradient and uncertainty⤴

from @ fizzics

The period (T) of a simple pendulum can be calculated using where l is the pendulum length and g is the gravitational field strength. Using a single value of length and period, we can determine the acceleration due to gravity.  However, it would be better experimental practise to vary the length of the pendulum and ... Read moreusing linest to obtain a gradient and uncertainty

the geiger-muller tube⤴

from @ fizzics

We’ve examined the operation of a Geiger-Müller counter as part of the radiation topic. image by Theresa Knott The Geiger-Müller (GM) counter is used to detect ionising radiation such as alpha and beta particles or gamma rays.  The radiation enters through a very thin window at one end of the tube.  This window is usually made ... Read morethe geiger-muller tube

referencing guide for AH project report⤴

from @ fizzics

You should be thinking about getting some of your project report finished so there is less to do when the deadline approaches.  You can start writing up your underlying physics section and sort out the references you will include at the end of the report.  I’ve attached a guide on referencing in the Vancouver style.  ... Read morereferencing guide for AH project report