EXAMS AND ME

Wednesday, 29 April 2026

Farnese Hermes

Farnese Hermes is a celebrated Roman marble statue of Hermes (Mercury), dating to the 1st century AD, and now in the British Museum. It is considered a Roman copy of a lost Greek original from the school of Praxiteles (4th century BC).

MESSENGER OF GOD

Hermes stands nude with a cloak draped over one shoulder.

He wears winged sandals, identifying him as the messenger god.

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Chemical Synapse Under Electron Microscope

Using electron microscopy in the 1950s, Sanford L. Palay and George E. Palade clearly visualized synapses as specialized junctions between neurons. This confirmed how neurons communicate.

Chemical Synapse

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The Third Man Of The Double Helix

Maurice Wilkins

Wilkins used X-ray diffraction techniques to study DNA fibers. His work at King's College London helped provide crucial evidence that DNA had a helical structure.

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Images From The Electron

Electron microscopy uses a beam of electrons instead of visible light to produce highly magnified images of very small structures such as cells, organelles, viruses, and materials at the nanometer scale.

Types Of Electron Microscope

Transmission Electron Microscope

Scanning Electron Microscope

Transmission Electron Microscope

Scanning Electron Microscope

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Blast From The Past: Electron

The electron is generally considered to have been discovered on 30 April 1897, when J. J. Thomson announced his results at the Royal Institution in London, showing that cathode rays were negatively charged particles smaller than atoms.

Electrons: Negatively Charged Particles