Newton’s Laws Of Motion – Motion

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In my last post I mentioned that the laws of motion are not obvious and they took a long time for people to figure them out. One of the reasons for this is that when we move we are nearly always subject to wind resistance and friction. It was therefore ‘obvious’ before Newton that if […]

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Newton’s Laws of Motion – Introduction

First of all I would like to say that these laws are by no means ‘obvious’ and neither can they be derived logically. Often people feel that they don’t ‘get it’ because they are looking for some deeper meaning. In fact nobody really ‘gets it’ – physicists are still trying to understand the world that […]

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Katie Hopkins – al Qaeda’s ‘Useful Idiot’

Katie Hopkins recent comments about refugees have definitely increased racial hatred – not against the refugees but against us. This post is not about the ongoing plight of refugees in the Mediterranean. Not because I think it unimportant but because it has been covered elsewhere1. The editors of the ‘Daily Jihad’ or whatever ISIS/Al Qaeda […]

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Election Debate – The EU

There is quite a bit you can say about the EU. In fact it is one of the centre of the policy of some parties. However, let us get it in perspective – see the graph on the right. There are much more important things to talk about. The data for EU costs are taken […]

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Election Debate – Is There A Green Alternative

While this is a criticism of the Green Party I am not singling it out because it is worse than other parties but because it is one of the best. I have (or did have) many friends who are in the Green Party including local councillors and people standing for election. They are all hard […]

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Election Debate – Debt

I had just gathered a few graphics and was about to write this post when I was alerted to a post by Simon Wren-Lewis1 which covered some of what I was going to say. However, I still have a few points of my own to make. The economy is one of the main debates around […]

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Speeding Up Code: The Last Thing You Do Is Optimise

The reason for this post is that on many websites about coding you will see some comment about the speed of various approaches. Often in the comments you will see such things as I ran code A 200,000 times and code B 200,000 times and code A was 2ms faster than code B. First of […]

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Picking Balls

A bag contains four balls – two red, one white and one blue. Someone takes two balls from the bag and tells you that at least one of them is red. What is the probability that the other is red? This is a simple logic problem which seemed to cause quite a few problems – […]

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‘Bigging Up’ Nuclear

The director of one of the companies I used to work for had a technique of getting contracts which is probably not that uncommon. He would get contracts with promises to deliver with ridiculous short time scales for delivery and also undercut the competitors on price. He then renegotiated the contract after a while once […]

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The Problem of Complex Systems

This post is a bit abstract but I hope it will help people understand the problems involved with dealing with complex systems. The reason it is abstract is because I want to make the ‘complex systems’ as simple as possible. We are told that nuclear is ‘certainly’ safe, that there is ‘no possibility’ of an […]

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