The Goldbach Conjecture

One of the oldest and most famous unsolved mathematical problems is the Goldbach conjecture. This is Every even number greater than 2 can be expressed as the sum of two prime numbers. This problem was first posed in 1742 by the German mathematician Christian Goldbach and nearly three hundred years later no one has managed… Continue reading The Goldbach Conjecture

The Science Geek is now Explaining Science

When I started my Science Geek blog back in April 2014, I never expected it still to be up and running five years later.  Over these five years its popularity has gradually increased, and I now have around 2,300 followers.   However, after five years of blogging I feel now that it is time for… Continue reading The Science Geek is now Explaining Science

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