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Dr Karl

Tuesday, 17 March 2015

Black and blue dress

Great Moments in Science Six ways the blue and black dress scrambles your brain

It's a very rare event when visual neuroscience and textile technology combine to take over the interwebs ... Dr Karl explains how the infamous 'blue and black dress' illusion works. 6 comments

Duration: 00:05:01; File size: 5MB 966kb

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Battle of the Somme

Science of war 2: spotting enemy guns using toilet-inspired technology

Towards the middle of World War 1, an Australian physicist at the front was lifted off the toilet seat one too many times. In part 2 of this series, Dr Karl explains how sound ranging technology changed the course of the war. 27 comments

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Karl Trek 2009

Karl Trek 2009

Follow Dr Karl's six-week trek along the famous medieval Spanish 'El Camino' pilgrimage, a footpath from the French-Spanish border to Santiago de Compostela.


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In 1533, cartographer Gemma Frisius wrote about using triangulation to work out the exact locations of faraway places Science of war 1: how to spot enemy guns using ancient geometry

At the beginning of World War 1 neither side had effective methods that could pinpoint the location of enemy artillery. Dr Karl explains the maths of war in part one of a two-part series. 3 commentsArticle has audio

Flow on effect: for every 200 millilitres of beer you drink, your kidneys generate 320 millilitres of urineWhy can't you stop going to the toilet after a couple of drinks?

If you've ever had a long night out at the pub you will have come across the strange phenomenon called 'breaking the seal'. Dr Karl explains the physiology of beer and bodily fluids. 26 commentsArticle has audio

Big wheel turning: mice love a good workoutMice are real gym bunnies

You don't need mirrors and doof-doof music to get wild mice, rats and even snails to go to the gym - according to Dr Karl they love a good workout on the running wheel. 3 commentsArticle has audio

Feeling the pinch: the main way you lose weight is by breathing it out. The most effective way to breathe more often is to exercise.What's the story with fat?

Where does fat go when you put it on, and where does it go when you're getting rid of it? Dr Karl has some unexpected answers to these questions. 44 commentsArticle has audio

In an absolute emergency, coconut water can be used as an alternative to blood plasma, but you're much better off just drinking it.Coconut water as blood plasma alternative?

Can coconut water be injected directly into the bloodstream as a plasma alternative? Dr Karl examines the truths buried behind this myth. 23 commentsArticle has audio

With the mineral content of a potato and loads of saturated fats, coconuts don't deserve their superfood reputation.Coconut claims don't hold water

Coconut water is about as good at rehydrating you as tap water! Dr Karl explores the myths behind this new food fad. 0 commentsArticle has audio

Heat waves have killed more Australians than all other natural hazards combined.Killer heat waves

Heat waves kill more people in Australia than all other natural hazards combined. Dr Karl explains why they pack such a powerful punch. 44 commentsArticle has audio

Electron microscope image of bacteriophages attacking bacteria'Good guy' virus kills bacteria

Bacteriophages kill about half the bacteria on Earth every day. Dr Karl explains how nature's guided missiles can treat common diseases. 23 commentsArticle has audio

Water-soluble antioxidants include vitamin C and glutathioneAntioxidants: the 21st century snake oil?

Antioxidant supplements are claimed to help prevent ageing, fight cancer and promote good health. Now Dr Karl will tell you the real story. 31 commentsArticle has audio

Light touch: Veins near the skin's surface re-emit tiny amounts of red light, but lots of blue lightWhy do veins look blue?

Blood is red, but thanks to physics, chemistry and industrial relations, veins can look blue, explains Dr Karl. 15 commentsArticle has audio

Slip up: We all know the banana peel is slippery, even though most of us haven't seen itThe science of slippery bananas

Yellow, radioactive and slippery: Dr Karl gets under the skin of low friction in the fruit world. 6 commentsArticle has audio

The best position will depend upon whether you get pain in flexion or extensionNot tonight darling, I have a backache

Don't let a bad back get in the way of your love life. Dr Karl reviews new research that can help - men, at least. 18 commentsArticle has audio

Up in smoke: limiting carbon emissions would have "hardly any effect on economic growth, and might actually lead to faster growth" say some economistsGlobal warming costs the economy

Moving to a non-carbon economy would be cheaper than burning carbon in the long run, explains Dr Karl. 12 commentsArticle has audio

Who is Dr Karl Kruszelnicki?

Sometimes described as an answer looking for a question, Dr Karl explains science as you've never heard it before each week on Great Moments in Science and his regular Thursday morning talkback on triplej.

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