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Here are some of the posts this generated

hi mark

For what it's worth here are the results of a quick just-in-time lesson on
how to set the ISO/aperture on a Canon 450D camera in Singapore.

I'd always wanted to know what those numbers were for and you guys forced me to learn - thanks..there are three ISO settings below.

I was in the pool with the kids this evening and they pointed out the full
moon. What an observant bunch Echalk are to also spot it.

Scott Johnson
in singapore

http://www.math.nus.edu.sg/aslaksen/teaching/moon.html explains the equatorial situation and notes that the Singapore coat of arms contains it (despite also depicting stars somehow magically visible through the darkened part of the Moon).

ken price in tasmania


This list is awesome! Thanks Ken. If anybody is curious and outside
comparing these lunar photographs as I am, have a look out for the last
flyover for the Endeavour space shuttle. Details below.

Regards Roland

Space Weather News for May 16, 2011
http://spaceweather.com
Endeavour has left the planet. The space shuttle lifted off this morning at
8:56 am EDT on a two week mission to the International Space Station. There
it will deliver the Alpha Magnetic Spectrometer--a $1.5 billion cosmic ray
detector that could reveal the nature of dark matter and find whole galaxies
made of antimatter. Links to more information are available at
http://spaceweather.com.
This is Endeavour's final flight as the shuttle program winds down. During
the mission, Endeavour will make numerous passes over North America,
Australia, and other places. Would you like to see it one last time? You can
turn your cell phone into a field tested shuttle tracker by downloading our
Simple Flybys app. Details athttp://simpleflybys.com


On 16 May 2011 20:58, Price, Ken from tasmania wrote :

http://www.math.nus.edu.sg/aslaksen/teaching/moon.html explains the
equatorial situation and notes that the Singapore coat of arms contains it
(despite also depicting stars somehow magically visible through the darkened
part of the Moon).

kp

________________________________

From: Roland Gesthuizen in vitoria

My kids wondered what students would see or imagine of left and right sides
when they are near the equator.

Sent from my iPad

John Thorpe from st hildas
wrote:

Hi Mark

Since we are living upside down relative to the northern hemisphere the

Moon appears upside down from what it does in Europe. The chief effect of this is that we see the lunar phases on different sides eg in Europe the
crescent after new moon is on the right, in Aus it is on the left, something
I still find really confusing!

Cheers

John

Mr John Thorpe
Head of IT Studies

I was looking on my Facebook when I noticed Rod Blitvich has posted a photo of the moon he had taken last full moon. Now I occurs to me that depending where you are standing on the earth, provided you are on different latitudes, you may see the moon in a different perspective.

So the question is then, does the person on the North pole see an inverted image to to person on the south pole. (ie up side down)

http://www.newbedford.k12.ma.us/middle/keith/weider/endang_species_quest/endangered_species_webquest.htm

Water

We have been looking at water and it’s properties. They have been

• Melting and boiling point
• Viscosity
• Solubility
• Miscibility
• Emulsions and emulsification

with a view to applying it to transport in the body. This is done via the blood.

Bloody facts

Blood is thicker than water and has a little bit salty taste. In an adult’s body there is 10.6 pints of blood circulating around. In their blood there is billions of living blood cells floating in a liquid called plasma.

If you took a small sample of this blood and poured it into a test tube and then put it in a machine called a centrifuge, you would be able to see the layers of this blood. This machine spins the blood around so fast that it separates the red blood cells, from the white blood cells, from the platelets. The red blood cells sink to the bottom because they are the heavier, more solid parts, but the plasma remains at the top because it is lighter.

The plasma is 95% water and the other 5% is made up of dissolved substances including salts.

Questions

1. When we talk about transport in humans we mean the process by which oxygen and nutrients are taken to the cells and waste products removed.

What part does viscosity play in this ?

2. Fats and oils (lipids) need be absorbed into the blood to be moved around the body. What are lipids and how are they absorbed into the blood via micelles.
3. If plasma is made from 95% water, what are the salts that are likely to be dissolved in plasma?
4. As we get older, our arteries harden, and fill with cholesterol. What does this mean in terms of viscosity?

Fear of Strong Steam

At the beginning of the eighteenth century Newcomen successfully developed a ‘fire’ engine that exploited atmospheric pressure to do work. The cylinder of the engine was filled with steam after which cold water was let in condensing the steam. This formed a partial vacuum and atmospheric pressure forced the piston down, thereby performing work. In the latter half of the eighteenth century James Watt carried out a large amount of development work on the engine; including the introduction of a separate condenser, which improved thermal efficiency. However, Watt refused to use what he called ‘strong’, high-pressure, steam. He believed strong steam to be far too dangerous, on a par with gunpowder.

Watt was right: not only was strong steam dangerous, it was unnatural. By unnatural I mean that it exceeded, in a fundamental way, the capacity of the forces of nature. His engines were a part of the natural order in that they employed only atmospheric pressure. That is, they were in the same category as windmills and waterwheels. For going beyond what nature intended, for a craft-based society not long out of the medieval mindset and that had yet to systematise science, was fraught with danger. Watt, however brilliant an engineer, was determined to frustrate this ungodly enterprise, and did so through the patents he controlled.

For a quarter of a century, he delayed the deployment of strong steam until, around 1800, the dyslexic Cornish engineer Trevithick successfully built a high-pressure steam engine. Within twenty-five years the Stockton and Darlington railway was running. Another twenty-five years after that came the Great Exhibition. In that half-century, the foundations of our technological society were laid. The powerhouse of change was a small but powerful strong-steam engine. Watt’s trepidation vindicated, nothing was ever the same again?