Daylight Saving Time

As mentioned in my previous post, in the early hours of Sunday 27 October the clocks go back an hour throughout the European Union and daylight saving time comes to an end. Although many Europeans will welcome the extra hour in bed on the night of 26/27 October, I suspect that a lot of people… Continue reading Daylight Saving Time

Time and time zones

In this post I’ll talk about the measurement of time and the use of time zones throughout the world. This is particularly topical at this time of year.  In the early hours of Sunday 27 October the clocks go back an hour throughout the EU as Europe switches to winter time. The natural day There… Continue reading Time and time zones

Stellar aberration

This post is a bit more technical than usual and discusses stellar aberration, the apparent movement of stars as a result of the motion of the Earth.  It is an interesting case of the application of the scientific method.  Observations were made to test a scientific theory, but unexpected results were found, which in turn… Continue reading Stellar aberration

Solar energy costs

In a previous post I talked about the advantages of solar electricity compared to other renewable source of electricity. In this post I’ll move away from my normal scientific topics and discuss the costs of small scale solar energy and how it compares with other renewables. Whats is 'the LCOE'? When comparing the relative costs… Continue reading Solar energy costs

Advantages of solar energy

As shown in the graph and table below, most renewable electricity is generated by hydroelectric power. Solar energy lies in third place behind wind. Electricity generated from renewable sources. From Our world in data (2018). The ‘Others’ category includes biofuels  (e.g. burning wood, animal and agricultural wastes), geothermal energy and wave/tidal power) Despite only being… Continue reading Advantages of solar energy