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About Johannes

I am a Dutchman, currently living in the US. Following a PhD in theoretical physics (spin-polarized quantum systems*) I entered a Global Fortune...

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By Johannes Koelman | November 5th 2009 07:47 PM | 6 comments | Print | E-mail | Track Comments
Will the $ 1,000,000 Randi Challenge Prize soon be awarded? The prize, administered by the James Randi Educational Foundation (JREF), is offered to anyone who can prove in scientifically controlled tests some form of paranormal power. So far, Randi's prize has not been claimed, but rumour has it that under supervision of the JREF an elaborate telepathy test is being conducted with shocking results.

A JREF staff member, who wishes to remain anonymous, commented on the ongoing tests with the words “I have never witnessed anything like this, this is deeply disturbing”.

By Johannes Koelman | October 11th 2009 12:56 PM | 5 comments | Print | E-mail | Track Comments
It is easy to marvel at Einstein's relativity theory. It is less easy to really understand relativity. At least so it seems. Understanding relativity requires abilities in predicting with confidence the outcomes of relativistic experiments. For that you need a PhD in physics. Right?


By Johannes Koelman | October 2nd 2009 09:23 PM | 40 comments | Print | E-mail | Track Comments
An article in this week's edition of Nature adds to the mysteries surrounding 'dark matter'. Should we abandon this enigmatic concept of invisible matter that exerts gravitational attraction but is otherwise undetectable? Could it be that we simply do not understand the long-range behavior of gravity?


Galaxy NGC 4414


By Johannes Koelman | September 27th 2009 05:27 PM | 7 comments | Print | E-mail | Track Comments
Take a decently sized housecat. Let's say a cat that is well-fed and weights 7.5 kilograms. We can all comprehend such a mass. It's not too small, neither too big. A cat is something we can pick up and lift in earth's gravitational field.


A cascade of powers of six-and-a-half billion

By Johannes Koelman | September 9th 2009 09:12 AM | 16 comments | Print | E-mail | Track Comments
Can we bring life forms into pure quantum states? Will we ever manage to elevate Schrodinger's cat from thought experiment to real-life experiment?

A recent publication suggests the answers to above questions are affirmative.


By Johannes Koelman | September 4th 2009 09:37 AM | 3 comments | Print | E-mail | Track Comments
Was an almighty God required to boot up the universe, or would a blindfolded monkey have sufficed?

What a silly question. Isn't it obvious that truly divine powers were needed to create our amazing universe capable of evolving systems of supreme complexity called 'life'? Maybe. Maybe not. It all boils down to the question: How special was the big boot, the mother of all boot-ups commonly referred to as the big bang?

Divine feat or random act?


By Johannes Koelman | August 15th 2009 07:36 AM | 51 comments | Print | E-mail | Track Comments
Google “E=mc2 is wrong” and you get 1,060 hits. Google “E=mc2 is correct” and you get a mere 138 hits. There you have it. It took us a more than a century, but finally this crazy inconsistent theory of relativity got outvoted. Common sense cries victory!

Fortunately, science does not work that way. Science is no democracy, and we do not render a theory invalid by popular vote. Einstein's theory of relativity has stood the test of time and its correctness is beyond any doubt. But... there is an issue with what is arguably the most famous equation in the history of natural sciences.


By Johannes Koelman | August 8th 2009 11:14 AM | 3 comments | Print | E-mail | Track Comments

The Principle of Maximal Aging - Capturing the Essence of Relativity


By Johannes Koelman | August 6th 2009 08:56 PM | 3 comments | Print | E-mail | Track Comments

Take a number. Take a second number. Add both together to produce a third. Again, add the last two numbers to produce the next. Repeat ad infinitum.

What can be more boring?


By Johannes Koelman | August 2nd 2009 08:58 PM | 10 comments | Print | E-mail | Track Comments
Call it irreversibility, call it time's arrow, call it the second law of thermodynamics. Fact is that everything evolves in such a way that things get more messy. Disorder rises. Entropy increases. We do not observe the opposite happening. Heat flows from from hot to cold, not the other way around. Fluids mix but don't unmix. Shattered pieces of crystal don't reassemble into a vase.