ShermanAndGreg Technology and Business

phenomena of totality cannot be seen; many partial eclipses are not total anywhere.
Finally there are annular eclipses, when the alignment is perfect but the Moon is near its greatest distance from Earth; its disk is not then large enough to cover the photosphere completely, and a ring of sunlight is left showing round the dark mass of the Moon (Latin annulus, a ring). For obvious reasons, a solar eclipse can happen only when the Moon is new, and thus lies on the Sun-side of the Earth. If the lunar orbit lay in the same plane as that of the Earth, there would be an eclipse every month, but in fact the Moon’s orbit is tilted at an angle of just over fivedegrees, so that in general the New Moon passes unseen either above or below the Sun in the sky. The points at which the Moon’s orbit cuts the ecliptic are known as the nodes, so that to produce an eclipse the Moon must be at or very near a node. Because of the gravitational pull of the Sun, the nodes shift slowly but regularly. After a period of 18 years 11.3 days, the Earth, Sun and Moon return to almost the same relative positions, so that a solar eclipse is likely to be followed by another eclipse 18 years 11.3 days later – a period known as the Saros. It is not exact, but it was good enough for ancient peoples to predict eclipses with fair certainty. For example, the Greek philosopher Thales is said to have

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The Heath is a lovely area of parkland with great views over London and lots of good walking to be done, and quiet corners and hidden wonders to explore. The view from Parliament Hill is worth taking in at any time of the year. It’s worth wandering away from the busier areas toward the West Heath and to the amazing hill garden and pergola. There are lots of lovely pubs around, including the Flask and the Bull and Bush in Hampstead, and the Spaniards Inn just off the North of the Heath.

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Monte Cristo has announced that new content will be available for free to Cities XL Planet Offer subscribers.

The Old England Pack is inspired by Shakespearian England and enables players to create their own historic towns.

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Designed and built a mini-ITX case entirely out of LEGO bricks. Here is a time lapse of the build process, just for fun More information and pictures at tfvlrue.wordpress.com (LEGO® is a trademark of the LEGO Group of companies which does not sponsor or endorse this project or video)

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They’re on their way again.
Despite some fierce competition, the Greenwich High School math team clinched a narrow, first-place victory in the opening round of the 2009-10 Fairfield County Math League season, the coach reports.

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Let’s see what we did this past week…

School was pretty good as were now getting into stuff I learned at Georgian. Were learning about the different eye structures (cornea, limbus, sclera, etc.) and there is a lot of pathology that they are also introducing (most I learned at Georgian) but it’s nice to lean it again, since now I actually have to know way more about each pathology. The nice thing is that with the pathologies they’re introducing them now and then going to talk about them more and more over the next three years. They’re actually doing the same thing with all of the pharmacology too. This past week we also had a quick lab learning how to do focimetry (the UK term for lensometry) on spheres. It was so basic, but they had a neat focimeter that was battery powered and the scale was actually inside the eye piece, so you got the stuff in focus and look down to see the value (unlike the normal focimeters where the readings are on the dial/drum outside at the side of the focimeter. (For those that don’t know focimetry/lensometry is how we read the prescription of a lens). In my clinical optometry lab we also just did some more practice with the direct ophthalmoscope, since this Thursday we are going to be assessed on our ophthalmoscopy skills :-O. We will have half an hour to do ophthalmoscopy and draw and label a picture of what we see, but luckily it is only one eye we will have to do this for. (Again for those who have no clue what I’m talking about basically a direct ophthalmoscope is a handheld instrument we use to look at the back of the eye (the retina), and here there is the optic nerve, a load of blood vessels, as well as the macula (an area that is responsible for our central/detailed vision)). They are going to end up marking us by comparing our drawings to pictures they took when we first arrived back in the end of September. After my lab one of my classmates who had bought his own ophthalmoscope did some more practiced on my right eye and since I have some of my old retinal photos on my laptop we then compared. It turned out he was remarkable accurate, but the only thing was that it took about 45min-1hr for him to do it . I’m just so surprised that they have us doing all this already, as some people in the class are still having trouble understanding what the difference is between retinoscopy and ophthalmoscopy. Retinoscopy is looking at a reflex of light coming out of the eye and from this we could determine the patient’s prescription but we usually then take this prescription and then get the patient’s input on what they like to refine the prescription (while as mentioned before Ophthalmoscopy is looking at the structures in the back of the eye).

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Elvis Live In Concert-The Closing Night Concert September 3, 1973
Tues 10/27 6:00 am ET
This show could have represented a 180 degree change in Elvis’ career history, since he and The Colonel got into it after the concert, and Elvis “fired” The Colonel. Elvis told Colonel Tom, “Stay out of my personal life, I’m my own man”. The Colonel’s reply to Elvis was “You can’t fire me, because I quit!” Several weeks later, history was not altered, as Elvis called the Colonel on the private “Las Vegas-Graceland Hotline” to let him know he wanted to go back out on the road and have things be the way they always had been. (1 hr)

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