The total rate at which power used by humans worldwide is approximately 15 TW (terawatts). The solar flux averaged over the sunlit half of Earth is 680 W/m2. (assuming no clouds). The area of Earth's disc as seen from the sun is 1.28 * 1014 m2. The surface area of Earth is approximately 197,000,000 square miles. How much of Earth's surface would we need to cover with solar energy collectors to power the planet for use by all humans? Assume that the solar energy collectors can convert only 10% of the available sunlight into useful power.
Power of theatre to move us Continue to debate old questions - Is Drama dangerous - How important is it to society - How persuasive is it First Critics of Theatre - Socrates- uncertain what he thought about theatre, never wrote anything down - Plato- Socrates student; wrote more - Aristotle- Plato’s student; wrote even more than Plato Still asking questions today: ex. MetOpera made about 1985 hijacking of passenger ship by terrorists in 2014; critics felt Opera was glorifying terrorists Ancient Greek comedy was topical, many being ridiculed Socrates was well known and made fun of by audience Play “The Clouds” Two funcitons 1. Wonder about abstract things, 2. Only thing he can teach is how to build an argument out of nothing to get out of a tight spot He was put on trial for corrupting young men of Athens with his teachings Plato wondered if comical mocking contributed to publics opinion Socrates found guilty and put to death Plato= judged The Republic which was done with Socrates playing in this play - Argued theatre is dangerous - Didn’t like theatre was imitation, led to slippery slope of pretending in real life - Didng’t like depiction of the gods - Didn’t Theatre depicts extremes of behavior, not normal - Dangerous because of its strengths to persuade - Should only be used to instruct good morals Aristotle - In The Poetics, claims theatre is a positive force - Defines 6 elements of tragedy - Theatre can provide catharsis- purging - Noticed we can live vicariously through theatre - Therapudic value - Become more empathetic - Both Aristotle and Plato believed watching theatre shapes the heart and the mind