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...account of subatomic structure would have ended with these particles, but now a deeper layer of structure is known. It is believed that protons and neutrons are composed of structureless particles known as quarks, while electrons and electron neutrinos are merely examples of a broader class of particles known as leptons. Furthermore, there are other fundamental...

...account at all times when practising as an engineer. We accept risk as part of everyday life so there is a need to balance the risks of an activity against the benefits that it brings. This free course, Assessing risk in engineering, work and life, investigates how we can manage risks at work, in the home and in the wider community. Risk is tied in with accidents so it is...

...account, you must be aged 13 years or over. Adults may want to use their own OpenLearn account to supervise younger learners on the course, and assist with the experiments. All of the experiments can be carried out with items you would find in a typical kitchen, but the Introduction to Week 1 provides a full equipment list. This OpenLearn science course was produced with...