More information on laser speckle can be found here: Speckle pattern A Mirror Alignment Tool The most important part of constructing a ruby laser (or any laser with external mirrors) are getting the mirrors alligned [more…]
(a ruby rod lit by two bright blue LEDs. Due to the IR filter in my camera the pink colour is actually red. What you are seeing is the absorption of the blue light and the [more…]
Introduction For many years the Doc has had the desire to attempt the construction of a ruby laser. After six months of hard work, disappointment, late nights, lots of booze and a drained bank account [more…]
It was another hot morning in Fremantle, Western Australia in early January. Forecast for 36 degrees Celsius, 97 in old money. “Gonna be a scorcher, Geek-o!”, said my benevolent host and long-time friend Mike, whom [more…]
When I was a young boy, I hated flying. I mean, really hated it. I think it was due to a traumatic flying experience on a transatlantic flight to Florida in a 747, back in [more…]
Towards the end of the 19th century, scientists were considering the structure of the atom. The atom was deemed to be a tiny piece of matter which helped answer questions regarding spectroscopy. Spectroscopy being the [more…]
Previously, we looked at our Sun and how it works however only a small part was covered. We saw that quantum tunneling allowed protons to fuse in conditions that classical physics – that relying only [more…]
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