# Monthly Archives: October 2011

## 2 (Galaxies)

An excerpt from Nancy Atkinson’s “Twin Spiral Galaxies Dance Together” in  Universe Today “…  The image was obtained, appropriately enough by the Gemini South telescope in Chile using GMOS, the Gemini Multi-Object Spectrograph. These two nearly identical spiral galaxies are in Virgo, 90 million light years distant, in the early stages of a gentle gravitational [...]

## 3 (00 million meters per second)

What moves at 300 million meters per second?  That’s the speed of light! From Wynne Parry’s “Why The Speed of Light Matters” in Live Science Credit: Willem Dijkstra, Shutterstock Einstein’s theory of special relativity sets of the speed of light, 186,000 miles per second (300 million meters per second), as a cosmic speed limit. Some [...]

## 4 (minute mile)

Roger Bannister breaks the tape at 3 minutes 59.4 seconds, a new world’s record. (Central Press Photo) 1 mile = 1.609344 kilometers Forbes “compiled a list of the greatest athletic accomplishments of the last 150 years… one feat did emerge as a clear winner: Roger Bannister breaking the four-minute mile.” “When (Roger) Bannister crossed the [...]

## Small Ways to Make a Big Difference

Consider this: after recycling your soda can, it takes as few as 60 days (10+01) for it to appear on your grocery shelf again.  In addition, “The energy you save by recycling a single aluminum can will run a TV for three hours,” according to recyclingfacts.org. Given that decomposition in a landfill takes as long [...]

## 5 (Platonic solids)

How many Platonic solids are there?  Only 5! Definition from Math is Fun: A Platonic Solid is a 3D shape where: each face is the same regular polygon the same number of polygons meet at each vertex (corner) Example: the Cube is a Platonic Solid each face is the same-sized square 3 squares meet at [...]

## 6 (.0221415)

Avogadro’s Number is 6.0221415 X 1023 which is also quantified as N A. “Avogadro’s number, N A , is the fundamental physical constant that links the macroscopic physical world of objects that we can see and feel with the submicroscopic, invisible world of atoms. In theory, N A specifies the exact number of atoms in [...]

## 7 (International System of Units [SI] base units)

The International System of Units (SI) is founded on seven SI base units for seven base quantities assumed to be mutually independent, as given in Table 1. Here is the SI list from the NIST reference on Constants, Units and Uncertainty. Table 1.  SI base units SI base unit Base quantity Name Symbol length meter [...]

## (Is an) 8 (nanometer node possible?)

Photo: IMEC The two-step Three scanning electron microscope photos of different examples of LELE double patterning, each one showing the final result. The dark-colored features were printed in one lithography/etch step, and the light-colored features in the second lithography/etch step. ——————————————————————————————— In an article from 2008 in Spectrum, the possibility of an 8 nanometer node [...]