Holy Radioactive Bananas!

I was reminded today by my social media brethren (thanks Jesse) that bananas are radioactive. They contain roughly 450mg of potassium and the isotope K-40 has a natural abundance of 0.01% which translates to 0.01 millrems per day. The radiation is split between 80% beta decay, 10% electron capture and 10% gamma rays.

Perhaps this explains my wife’s strong aversion to bananas? Continue reading “Holy Radioactive Bananas!”

Using 100% of your brain

The new movie Limitless is based on the premise that a drug can enable us to use “100% of our brains” because according to common wisdom, we currently only use 10%. This claim has been used in innumerable science fiction settings to provide a hypothetical source of magical cognitive abilities from super-intelligence to extra-sensory perception and is one of the most ill-informed and silly pretexts I’ve seen.  Of course, this realization is not new but I felt like writing a short rant.

Continue reading “Using 100% of your brain”