Ankidroid additions related to Science, History and Philosophy. More information about Anki can be found in this article.
How Big is an Atom?
A human hair and atoms vary in size, but a typical human hair is 1/10th of a millimeter thick. 390 billion atoms would theoretically fill a cross section of a human hair. There are more atoms in an inhaled breath of air than there are stars in the entire visible Universe. See this video of Gold atoms being pulled apart under a transmission electron microscope.
How Freud viewed the Main Conflicts of Man
“Dreams are often most profound when they seem the most crazy.”
He viewed the primary conflicts in mental-life as the Ego tortured by the ‘Id’ – underlying biological forces such as impulsive actions and urges, but also severely limited and repressed by the Super-Ego (Civilization and Society). Neurotic people (people who are more susceptible to psychological challenges) are more likely to see the Social World versus them and the harsh repressive as the Super-Ego.
We are embedded in our animal-selves and there’s a strong connection between his theories and that of evolutionist’s ‘natural selection’. We are driven more by our innate and natural aggression instincts and sexual urges. The rationalist conscious over-pinning barely just tinkers.
How is the Diameter of a Black Hole Bigger than its Circumference?
If the Universe is a bed sheet then a Black Hole is a stupendously heavy pebble (singularity) sinking the sheet downward (warped space).