In my latest A level Biology video, I look at how an action potential is transmitted down a non-myelinated axon and the importance of the refractory period.

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In my latest A level Biology video, I discuss how rod cells and cone cells act as light receptors in the retina.

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In my latest A level Biology video, I discuss how the Pacinian corpuscle acts as a pressure receptor in the nervous system.

Rod cells and Cone cells will be uploaded later today.

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In my latest A Level Chemistry video, I look at interpreting a mass spectrum for an organic compound, including fragmentation patterns.

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In my latest A Level Biology video, I look at the light-dependent reactions of photosynthesis, including cyclic- and non-cyclic photophosphorylation and chemiosmosis.

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In my latest A level Biology video, I look at the role of chlorophyll and photosystems in the light-dependent reactions of photosynthesis.

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In my latest A Level Biology video, we look at the two key reactions in photosynthesis, which are called the light-dependent reactions and the light-independent reactions. We explore how these reactions link together.

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In my latest A level Chemistry video, we look at directing groups in the reactions of benzene compounds. We explore how different groups can make the benzene ring more or less reactive and direct substitution to specific carbon atoms.

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In my latest A level Chemistry video, we look at the reactions of phenol. First we explore why phenol reacts more readily than benzene. We then look at the bromination and nitration of phenol. Finally, we look at the acidity of phenol.

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In my latest A level Chemistry video, I look at Friedel-Crafts Alkylation and Acylation reactions of benzene. This is an important reaction as it increases the number of carbon atoms in the molecule.

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I'm updating my GCSE videos with much better sound and clearer examples. Here's the new video on fractional distillation for GCSE.
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If you're thinking of studying A level Biology in September, check out my latest video. I look at calculations involving magnification. Some students find it tricky but I show you a failsafe method and give you plenty of examples to try.

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In my latest video for A level Biology, I explore Phylogeny and Phylogenetic trees. It's a fascinating topic and a useful video if you're considering studying Biology at A Level.

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In my latest video for A Level Chemistry, I discuss how to use a displayed formula, a structural formula and a skeletal formula.

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A Level Chemists ... in my latest video, I look at naming branched-chain hydrocarbons. Worth a look if you're finding it tricky.

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In my latest A Level Chemistry video, I explore how to name unbranched hydrocarbons. Students sometimes find this topic challenging but it's more straightforward than it looks.

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I've been experimenting using the schoolsobservatory.org in advance of using it for an enrichment activity in school and I'm rather pleased with my image of NGC6015 :-). Many thanks The Schools' Observatory #iteachphysics

Just had a great discussion with Paul and Dan at Beamont Collegiate Academy in Warrington about my upcoming CPD session. I can't wait to work with their Science team.

Six schools are now booked in for free Zoom CPD sessions. If you'd like a session for your Science department, email [email protected]