"My star trail images are made by taking a time exposure of about 10 to 15 minutes. However, with modern digital cameras, 30 seconds is about the longest exposure possible, due to electronic detector noise effectively snowing out the image. To achieve the longer exposures I do what many amateur astronomers do. I take multiple 30-second exposures, then ‘stack’ them using imaging software, thus producing the longer exposure.”
Here is an excerpt from the article:
"We’re now testing a smart contact lens that’s built to measure glucose levels in tears using a tiny wireless chip and miniaturized glucose sensor that are embedded between two layers of soft contact lens material. We’re testing prototypes that can generate a reading once per second. We’re also investigating the potential for this to serve as an early warning for the wearer, so we’re exploring integrating tiny LED lights that could light up to indicate that glucose levels have crossed above or below certain thresholds. It’s still early days for this technology, but we’ve completed multiple clinical research studies which are helping to refine our prototype. We hope this could someday lead to a new way for people with diabetes to manage their disease."
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This is known as gravitational lensing and is a prediction provided by Albert Einstein's general theory of relativity.
Spacetime around a massive object is curved, and as a result light rays from the source propagating through spacetime are bent. The lensing effect can magnify and distort the image of the background source.
The observation of a total solar eclipse in 1919 helped to confirm Einstein's theory of general relativity by comparing the apparent distance between stars, with and without the Sun between them. Here is a photograph of that solar eclipse:
This solar eclipse provided a rare opportunity for observers to compare these apparent distances and determine that general relativity is true by showing that a massive object can affect the propagation of light. This means that the sun is causing spacetime to curve and gives credence to gravitation.
- USNAG, 2011 - present
-Quentin Smith, The Felt Meanings of the World
An intellect which at a certain moment would know all forces that set nature in motion, and all positions of all items of which nature is composed, if this intellect were also vast enough to submit these data to analysis, it would embrace in a single formula the movements of the greatest bodies of the universe and those of the tiniest atom; for such an intellect nothing would be uncertain and the future just like the past would be present before its eyes.
Any sufficiently advanced technology is indistinguishable from magic.
-Arthur C. Clarke
- Eastern Washington UniversityComputer Science, 2003 - 2004
- Spokane Falls Community CollegeAssociate's Degree, 2001 - 2002
- Cheney High SchoolDiploma, 1996 - 2000
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