Einstein couldn't wrap his mind around quantum physics, why should we try? Because there are explantations that make sense out of a nonsensical world; because there are perspectives that clarify mysteries; because it is fun!
But that trick won't work with a normal flashlight. You need a laser pointer split by a prism! :)
A flashlight won't work because the light isn't coherent. A LASER POINTER WILL work. Here's what you do:
I should mention, I did this very experiment in college physics lab, something over 40 years ago.
Kindly note: doing the same thing with electrons is CONSIDERABLY HARDER!
Perhaps it could be done with a Scanning Electron Microscope. I'd consider trying if I weren't retired.
No, but as Loren said, it still can be done at home! As a bonus, your cat will love the laser pointer! I know mine do! :D
I wasn't able to open this link, but copied and pasted the title and came up with this most interesting film. Morgan Freeman walks us through an experiment by Yves Couder and I get a shiver running up and down my spine. Particle and wave co-exist! COOL! indeed!
My 9-year-old son is ... well, he's my son, he's a geek. In my travels through his science education I've found a few absolutely brilliant gems
The first book I got for my daughter - I think of it as "A Brief History of Time" for kids: http://www.amazon.co.uk/Time-Universe-Whats-Big-Idea/dp/0340655909 - I cannot rave enough about this book (that's my 2002 review... I'm still keen on it!)
That book helps to set the stage for this one: http://www.amazon.com/This-Strange-Quantum-World-You/dp/1577330358
Stephen and Lucy Hawking have a series out - we only have one of them, but it's not bad: http://www.amazon.com/Georges-Secret-Universe-Stephen-Hawking/dp/14...
Now - time for the big keyboard confessional. I learned how to explain these mind-blowing concepts so much easier (because I understood them more) after these kids books... just sayin'...
Very cool! I can't wait to indoctrinate my kids with this same stuff! :D
Aristotle might have meant "All men desire to claim to know."
More years ago than I want to count, while in college, I read of Aristotle's claim that women have fewer teeth than men.
About 2K years passed before someone with access to the media counted teeth and found Aristotle wrong.
Observing photons changes their reality?
Observing politicians changes their behavior and changes observers' beliefs.