Entries from September 2009
Where should a business set up its new commercial store – chain or single – to maximize its profit? There may be a demand for the store in a sparsely populated region but it may be wiser to locate the store in a densely populated region for more profit. Is there a definite correlation between population density and commercial facility density?
Similarly, if the government or citizen group wants to locate a public facility – temples, toilets, grocery store, fire station – where should that be? It is not for profit, but should be easily accessible by many. Is there a suggestive correlation in this situation?
The answer to the above two questions is yes.
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Categories: Research Notes · Science Notes
Tagged: economics, microdynamics, offbeat, population density, Research, scaling laws, Science, shopping
September 24, 2009 · Comments Off
Data analyzed from the recently aborted mission of Chandrayaan confirms the presence of water on the Moon. This discovery is due to the Moon Minerology Mapper (M3) device from NASA, carried on board Chandrayaan. NASA will hold a press conference later today to brief about the new scientific findings. NASA confirms this and thanks ISRO.
As it stands today, three different spacecraft have confirmed the presence of water on the Moon. Water doesn’t seem to be present in the craters and crevices but as hydroxyl or water molecules strewn diffusely across the moon’s surface in low concentrations. The Moon Mineralogy Mapper (M3) on board Chandrayaan was able to detect wavelengths of light reflected off the surface that indicated bonds between hydrogen and oxygen molecules. This means the presence of is either water or hydroxyl.
Hydrogen deposits measured by Lunar Prospector
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Categories: Information
Tagged: Science, Astronomy, chandrayaan, moon, moon mission, Space, videos, moon water, indian moon mission, lunar mission
September 24, 2009 · Comments Off
Data analyzed from the recently aborted mission of Chandrayaan confirms the presence of water on the Moon. This discovery is due to the Moon Minerology Mapper (M3) device from NASA, carried on board Chandrayaan. NASA will hold a press conference later today to brief about the new scientific findings. NASA confirms this and thanks ISRO.
As it stands today, three different spacecraft have confirmed the presence of water on the Moon. Water doesn’t seem to be present in the craters and crevices but as hydroxyl or water molecules strewn diffusely across the moon’s surface in low concentrations. The Moon Mineralogy Mapper (M3) on board Chandrayaan was able to detect wavelengths of light reflected off the surface that indicated bonds between hydrogen and oxygen molecules. This means the presence of is either water or hydroxyl.
Hydrogen deposits measured by Lunar Prospector
(more…)
Categories: Information
Tagged: Science, Astronomy, chandrayaan, moon, moon mission, Space, videos, moon water, indian moon mission, lunar mission
We have heard of the Mobius band. A one sided strip, it is a topological peculiarity. Over the decades it has popped up in several places in knowledge-space: the self-induction free Mobius resistor, the Mobius gear, the shape of the trajectory the Solar wind plasma assume in their route to chaos when interacting with the Earth’s magnetic field, the musical arrangement of J. S. Bach’s Crab canon, the space of dyads, to name a few.
What happens when a solid, rigid, Mobius ring is dropped into a fluid, say, water? Will the drag forces acting on it be any different from that for a regular (section of a) solid cylinder? The answer is yes, according to a recent experimental study by Leweke et al. (2009).
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Categories: Fluid Sciences · Research Notes · Science Notes
Tagged: fluid mechanics, Research, Science, engineering, mobius, mobius strip, mobius band, mobeus band, wake, drag force
Teachers do their homework before class while students do it after
- (Retd. IITM) Prof. V. G. K. Murthy, in his Teachers’ Day address today at CLT, IITM.
Categories: Asides · Quotes
