Spark spectroscopy won me first place in a Science Fair event about 40 years ago. I just did it for the pretty colours.
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This is Andersonite which is fascinating on many levels.
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A liquid crystal sheet will respond to a range of temperatures. This one from 20 C showing a handprint.
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Ultraviolet becomes visible when it makes things fluoresce.
“Continue reading” to see more interesting facts about UV and scorpions. 6 photos, links…
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A big Fresnel lens focuses sunlight to make popcorn.
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Is this the start of a beautiful relationship? It’s autumn and some of the flowers are gone but there is still a lot of activity in the garden. A pleasant time for a stroll in the backyard.
“Continue reading” for a range of colourful insect photos. 12 photos.
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This is one drop of 40% concentrated Fluorescein dye dropped into water with some bleach alkalinisation which enhances the fluorescence under long wave UV light.
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Here an empty can of “light” beer is held in a stream of air from a leaf blower.
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Photos of local creatures on my hand. This is a winged bull ant (Myrmecia gratiosa). It is vigilant and aggressive with a very painful sting but this one seemed happy to walk on my hand while I took snaps with my other hand.
“Continue reading” for all sorts of remarkable creepy-crawlies on my hand. 26 photos.
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“Rubbing two sticks together to start fires is just Soo-oo Caveman, dearie. And using flint is just a disaster for your nails”. Well here is your modern equivalent for the sophisticated camper. Firesteel uses the modern version of flint as a survival tool for starting fires.
“Continue reading” for the interesting metallurgy and how to make a fire.
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