Measurements with the Sun
Measuring the diameter of our star This simple exercise allows students to measure the diameter of the Sun using a metre rule and two pieces of card. An image of the Sun needs to be projected on the card using a small hole in one piece of card.
Measuring the number of hours in a day Using a cardboard box and pinhole to project the image of the Sun on to graph paper, students can calculate the time taken for the Earth to make one revolution (i.e. the length of one day).
Show health and safety information
Please be aware that resources have been published on the website in the form that they were originally supplied. This means that procedures reflect general practice and standards applicable at the time resources were produced and cannot be assumed to be acceptable today. Website users are fully responsible for ensuring that any activity, including practical work, which they carry out is in accordance with current regulations related to health and safety and that an appropriate risk assessment has been carried out.