The sheet of photoreceptors is much like a sheet of film at the back of a camera. But it has a hole in it. At one location, called the optic nerve head, processes of neurons collect together and pass as a bundle through the photoreceptor sheet to form the optic nerve (the thick black line extending up and to the left in the diagram), which carries information from the eye to the rest of the brain. At this location, there are no photoreceptors, and hence the brain gets no information from the eye about this particular part of the picture of the world. Because of this, you should have a "blind spot" (actually two, one for each eye), a place pretty much in the middle of what you can see where you can't see.
Thursday, March 31, 2011
Blind spot test
I am always learning new things that make me wonder how I have gotten through life without knowing about them. This is the reason you have a blind spot:
Tuesday, March 29, 2011
Monday, March 28, 2011
Saturday, March 26, 2011
Friday, March 25, 2011
Wednesday, March 23, 2011
Tuesday, March 22, 2011
Atlantropa
Atlantropa, also referred to as Panropa, was a gigantic engineering and colonization project devised by the German architect Herman Sörgel in the 1920s and promulgated by him until his death in 1952. Its central feature was a hydroelectric dam to be built across the Strait of Gibraltar, which would have provided enormous amounts of hydroelecticity and would have led to the lowering of the surface of the Mediterranean Sea by up to 200 metres, opening up large new lands for settlement, for example in a now almost totally drained Adriatic Sea.Atlantropa at Wikipedia
Sörgel saw his scheme, projected to take over a century, as a peaceful European-wide alternative to the Lebensraum concepts which later became one of stated reasons for Nazi conquest of new territories. Atlantropa would provide land and food, employment, electric power, and most of all, a new vision for Europe and neighbouring Africa.
Friday, March 18, 2011
Thursday, March 17, 2011
Wednesday, March 16, 2011
Tuesday, March 15, 2011
SEC football
So now LSU is under suspicion because of that guy connected with Oregon, and Georgia just had a micro-suspension. That has got me thinking. Okay, SEC fans, we've had our time. The conference has been at the top, and things are bound to turn down. Since that's inevitable, I want the conference to go out with a little style.
Let's say that the current situation at LSU is just the tip of an iceberg, that the school has been hiring all sorts of illegal recruiters. That's LSU. I know that Bobby Petrino, Houston Nutt, and Nick Saban would cheat. I think Mean Eugene is honest, but perhaps the culture at Auburn is too corrupt for him, and also his players are obviously burglars and criminals. I know that Tennessee is inherently cheating. Mark Richt seems too goody-goody, but that's what people thought about Jim Tressel, too. Maybe Steve Spurrier is willing to bend the rules a little bit more than usual, thinking at his age he's got nothing to lose. Perhaps some of that Kentucky anything-to-win in basketball has leaked over to the football program.
What I am describing is a conference with the kind of rampant lawlessness we might associate with the old Southwest Conference. But it's on a much bigger stage, with much bigger stakes. And that's what I want to see: multiple titles, multiple probations, multiple scandals. I want serious discussions about a school getting the death penalty. I want the kind of hubris that poets would write about, or that could at least be a made-for-TV movie. I want to do this old school.
Let's say that the current situation at LSU is just the tip of an iceberg, that the school has been hiring all sorts of illegal recruiters. That's LSU. I know that Bobby Petrino, Houston Nutt, and Nick Saban would cheat. I think Mean Eugene is honest, but perhaps the culture at Auburn is too corrupt for him, and also his players are obviously burglars and criminals. I know that Tennessee is inherently cheating. Mark Richt seems too goody-goody, but that's what people thought about Jim Tressel, too. Maybe Steve Spurrier is willing to bend the rules a little bit more than usual, thinking at his age he's got nothing to lose. Perhaps some of that Kentucky anything-to-win in basketball has leaked over to the football program.
What I am describing is a conference with the kind of rampant lawlessness we might associate with the old Southwest Conference. But it's on a much bigger stage, with much bigger stakes. And that's what I want to see: multiple titles, multiple probations, multiple scandals. I want serious discussions about a school getting the death penalty. I want the kind of hubris that poets would write about, or that could at least be a made-for-TV movie. I want to do this old school.
The Ides of March
The Ides of March (Latin: Idus Martii) is the name of 15 March in the Roman calendar, probably referring to the day of the full moon. The term ides was used for the 15th day of the months of March, May, July, and October, and the 13th day of the other months. The Ides of March was a festive day dedicated to the god Mars and a military parade was usually held. In modern times, the term Ides of March is best known as the date that Julius Caesar was killed in 44 B.C. Julius Caesar was stabbed (23 times) to death in the Roman Senate led by Marcus Junius Brutus, Gaius Cassius Longinus and 60 other conspirators.Ides of March
On his way to the Theatre of Pompey (where he would be assassinated), Caesar saw a seer who had foretold that harm would come to him not later than the Ides of March. Caesar joked, "Well, the Ides of March have come", to which the seer replied "Ay, they have come, but they are not gone." This meeting is famously dramatized in William Shakespeare's play Julius Caesar, when Caesar is warned to "beware the Ides of March".
Monday, March 14, 2011
Sunday, March 13, 2011
Friday, March 11, 2011
Football misbehavior week
Auburn players breaking and entering, etc etc etc, but young dudes are generally idiots, so I am not surprised they did something stupid. What I really am struck by is The Ohio State Situation.
I am trying to think of another situation in which a coach got off as lightly as Jim Tressel apparently will. He knowingly lied about eligibility-ending violations by players. That is a resign-before-you-get-fired situation. And yet Tressel is still around. The man has no shame! All that, just to beat Arkansas.
I am trying to think of another situation in which a coach got off as lightly as Jim Tressel apparently will. He knowingly lied about eligibility-ending violations by players. That is a resign-before-you-get-fired situation. And yet Tressel is still around. The man has no shame! All that, just to beat Arkansas.
higher ground
If there's been an earthquake and a tsunami is coming, you need to get to higher ground.
Wednesday, March 09, 2011
Tuesday, March 08, 2011
Saturday, March 05, 2011
Saturday game
It is raining pretty hard here right now, so here is something: Tentacle Wars. It's pretty good once you get the hang of it.
Thursday, March 03, 2011
Wednesday, March 02, 2011
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