Reginald L. Goodwin's Posts (3124)

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Annular Eclipse Sunday...


 


Credit:
Hinode/XRT

Skywatchers in East Asia and the western United States should circle Sunday (May 20) on their calendars. That's when a solar eclipse will block out most of the sun, leaving a spectacular "ring of fire" shining in the sky for observers located along the eclipse's path.

 

The event is what's known as an annular solar eclipse — from the Latin "annulus," meaning "little ring" — and its full glory should be visible from much of Asia, the Pacific region and some of western North America, weather permitting. At its peak, the eclipse will block about 94 percent of the sun's light.

Space.com:
'Ring of Fire' Solar Eclipse Occurs May 20










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In The Neighborhood...












The Most Likely Places to Find Alien Life according to Seth Shostak of the SETI institute are Enceladus (small moon of Saturn), Titan, Mars, Europa, Venus, Callisto and Ganymede (Jupiter moons).

Mind you, the EXTREME climates on these extraterrestrial candidates are not hospitable to human life, without some well-engineered terra-forming.

However, we have examples on the Earth of life developing under extremes:
crushing pressures at ocean depths; temperatures beyond the boiling point of water where we've found life, thus the theory: if in these places, then elsewhere beyond our solar system.

 

Space.com:
The 6 Most Likely Places to Find Alien Life

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Righteous Indignation...

 



It is a psychosis when one's esteem is based on an entire culture's abasement. It is also, national suicide to
insist that the heavy lifting of
future STEM careers be held up by one culture, one gender over all others.

 


"Melting pot" then becomes less than lyric poetry: it devolves to self-delusional myth, "picket fence" fantasies and a recipe for national disaster as the globe becomes more complex and needs every citizen valued, valuable and rowing in our collective boat. The inane debates on birth control, gay marriage et al have not created a
singlejob, a single educational opportunity for those at the bottom of the social hierarchy to lift themselves by bootstraps... with no laces!

 

"Pyrrhic victory" will be our epitaph.


 
"Blessed [are] the meek: for they shall inherit the earth." Matthew 5:5

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Signs of Shake, Rattle and Roll...


 


Earthquake in Chile:
Bostondotcom


ABSTRACT:
During earthquakes preparation periods significant disturbances in the ionospheric plasma density are often observed. These anomalies are caused by lithosphere-atmosphere-ionosphere interaction, particularly by the seismic electric field penetrating from the ground surface into the ionosphere. The seismic electric field produces electromagnetic EB drift changing plasma density over the epicenter region and magnetically conjugated area. The paper is devoted to analysis of regular Global Positioning System observations and revelation of seismo-ionospheric precursors of earthquakes in Total Electron Content (TEC) of the ionosphere. Global and regional relative TEC disturbances maps (%) have been plotted for 2005-2006 M6, D<60 km seismic events and analyzed in order to determine general features of precursors. The obtained results agree with the recent published case-study investigations.

 

Physics arXiv:
Searching for seismo-ionospheric earthquakes precursors:Total Electron Content disturbances before 2005-2006 seismic events

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SEM shows a gold nanotip (top) and localized photocurrent from the nanotip apex (middle). A schematic depicts the photoelectron escape trajectory (with quenched quiver motion) from the nanolocalized field (bottom). (Courtesy of University of Göttingen)

 


In 1905, Albert Einstein used his “quantum” view of light to explain key attributes of the photoelectric effect: The energy of electrons emitted from a metal does not increase at higher light intensities, as the classical wave theory contends, but only the number of emitted electrons increases, consistent with light quanta. With the photon energy E = hν, each electron acquires energy from one photon, and only by increasing the light frequency ν (and not intensity) can the energy of the emitted electrons be increased.

Now, more than a century later, scientists at the University of Göttingen (Göttingen, Germany) have demonstrated that in the so-called strong-field regime—the interaction of extremely high-intensity laser light with atoms and surfaces—classical dynamics may indeed prevail in photoemission from metal nanostructures.1

“In the usual photoeffect, one electron absorbs one photon, but in our experiments, we found electrons that had hitched a classical ride on the light field itself to escape confinement on the nanoscale,” says University of Göttingen scientist George Herink. “Strong, few-cycle infrared light pulses focused on gold nanotips cause the energy of electrons to grow with increasing intensity and wavelength; some electrons acquire the energy of not just one photon, but more than a thousand photons.”

 

Laser Focus World:
STRONG-FIELD PHYSICS: Ultrafast pulses, gold nanotips renew classical view of the photoelectric effect

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Nanotech Cancer Fighters...


 


Health New Medicine

For more than a decade, researchers have been trying to develop nanoparticles that would deliver drugs more effectively and safely. The idea is that a nanoparticle containing a drug compound could selectively target tumor cells or otherwise diseased cells, and avoid healthy ones. Antibodies or other molecules can be attached to the nanoparticle and used to precisely identify target cells. "One of the largest advantages of nanotechnology is you can engineer things in particle form so that chemotherapeutics can be targeted to tumor cells, protecting the healthy cells of the body and protecting patients from side effects," says Sara Hook, nanotechnology development projects manager with the National Cancer Institute.

 

But executing this vision has been difficult. One challenge: a drug's behavior in the body can change dramatically when it's combined with nanoparticles. A nanoparticle can change a drug's solubility, toxicity, speed of action, and more—sometimes beneficially, sometimes not. If a drug's main problem is that it's toxic to off-target organs, then nanotechnology can ensure that it's delivered to diseased cells instead of healthy cells. But if a drug depends on being absorbed quickly by diseased cells to be effective, a nanoparticle may slow the process and turn an optimal therapeutic into second best.

 

Technology Review:
Fine-tuning Nanotech to Target Cancer

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Eclipsing Expectations...


 
 
 


 



Fred's Excellent Eclipse Image (that's the cred)


Black Sun,” a feature-length documentary, chronicles two celestial events: the May 20, 2012 annular solar eclipse and the November 14, 2012 total solar eclipse. The movie follows two astrophysicists who study the solar atmosphere during eclipses:

•Dr. Alphonse Sterling of NASA Marshall Space Flight Center stationed in Japan (a man who had early success in the US, but left his home country to further cultivate his wide-ranging interests).

Dr. Hakeem Oluseyiof the Physics & Space Sciences department at the Florida Institute of Technology (a scientist who beat all of the odds: poverty, homelessness, single-parent, poor early education, etc., to get to where he is today).

“Black Sun” explores how and why the two men became scientists, their opposing paths and personalities, their struggles as minorities in a STEM (Science, Technology, Engineering, Mathematics) field, and their noteworthy accomplishments today.


 



Related Link:
Hubble's Diverse Universe

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edX...



 
 
 

Harvard Gazette

An organization established by MIT and Harvard that will develop an open-source technology platform to deliver online courses. EdX will support Harvard and MIT faculty in conducting research on teaching and learning on campus through tools that enrich classroom and laboratory experiences. At the same time, edX also will reach learners around the world through online course materials. The edX website will begin by hosting MITx and Harvardx content, with the goal of adding content from other universities interested in joining the platform. edX will also support the Harvard and MIT faculty in conducting research on teaching and learning.

 

Such as:
MITx 6.002x Circuits and Electronics
Info:
edX online
Technology Review:
Harvard and MIT Offer Online Education for Free

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Moore's Law Another Day...

"[Gordon] Moore is my boss, and if your boss makes a law, then you'd better follow it," says Mark Bohr, who leads Intel's efforts to make advances in microchip design practical to manufacture. Moore's Law, of course, was first proposed by Bohr's boss in 1965, when Moore pointed out that the number of transistors on a chip doubles every year. The current form of Moore's law has been set since 1975, when Moore altered the pace to a doubling every two years. Remarkably, the computer industry has maintained that pace ever since, training us to expect computers to become ever faster in the process.

 

Technology Review:
Moore's Law Lives Another Day

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Cold Islands, Hot Fusion...


 


Experimental Fusion Reactor - MIT

One reason it's taking decades to develop fusion reactors that can generate electricity is that physicists don't completely understand what's going on in the high-temperature plasma inside a reactor. Under certain conditions, the plasma—which is where fusion reactions take place—disappears in under a millisecond.

 

A new theory developed by researchers at the U.S. Department of Energy's Princeton Plasma Physics Laboratory (PPPL) explains what happens just before the plasma disappears. The explanation could help engineers design better reactors. And that might help them increase the power output of a reactor, perhaps doubling the electricity they could produce, and making fusion reactors more economical.

According to the researchers' theory, islands develop within the plasma that cool off and cause the plasma to disappear. These islands—which are easily identified—could be selectively heated with microwaves, the researchers think, which could keep the plasma stable.

 

Technology Review:
Physicists Crack Fusion Mystery

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Open Apology...

ALdotcom: Girls in Science and Engineering


I don't think it arrogant to apologize for an entire half of a species, since many of the sins of that part I am member - male - I can recall in myself, and constantly seek penance when I recognize certain behaviors I may have consciously, or unwittingly participated in.


I follow the blog "Female Science Professor" (who also hosts Scientopia). Her posts lead to a study by Yale School of Management Professor Victoria L. Brescoll, who authored a paper titled: "Who Takes the Floor and Why: Gender, Power, and Volubility in Organizations." A summary of its findings from Bob Sutton's insightful blog:

  1. In a study of United States senators (using data from 2005 and 2007), more powerful male senators talked quite a bit more on the senate floor than less powerful male senators. But there were no significant differences between how much powerful female senators talked compared to less powerful female senators.

  2. This finding was replicated in a controlled experiment -- again, more powerful men talked more, more powerful women didn't. Additional analyses suggested that powerful women hesitated to talk more because they were concerned about "potential backlash," that they would be seen as less likable, "out of line," domineering, too controlling, would lose power, and be less effective.

As our three branches of government goes, so goes academia, industry; innovation.

That's concerning, because by mid century we will reach a population of 9 billion, meaning as with our birth rates, our problems will multiply exponentially and will need competent technologists to solve them. Women will constitute a majority in the sciences and engineering. I don't see how this moribund, draconian, Neanderthal base attitude can continue, and our competitiveness on a global scale "goes forth" unimpeded as if by the magic of Manifest Destiny!

 

In a sense, Fred and Barney haven't quite left the cave in mythical Bedrock.

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Cinco de Mayo...

Battle of Puebla - Wikipedia

Cinco de Mayo (Spanish for "fifth of May") is a celebration held on May 5. It is celebrated nationwide in the United States and regionally in Mexico, primarily in the state of Puebla, where the holiday is called El Dia de la Batalla de Puebla (English: The Day of the Battle of Puebla). The date is observed in the United States as a celebration of Mexican heritage and pride, and to commemorate the cause of freedom and democracy during the first years of the American Civil War. In the state of Puebla, the date is observed to commemorate the Mexican army's unlikely victory over French forces at the Battle of Puebla on May 5, 1862, under the leadership of General Ignacio Zaragoza Seguín. Contrary to widespread popular belief, Cinco de Mayo is not Mexico's Independence Day—the most important national patriotic holiday in Mexico—which is actually celebrated on September 16. (Wikipedia)

The National Society of Hispanic Physicists has a recognition page of Hispanic Americans in Physics - Past, Present and Future. Similar to what I posted during the month of February, my intention is to give the same attention to Hispanic Scientists and Engineers during the celebration of National Hispanic Heritage Month.

 

Happy Cinco de Mayo!

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Riddle of the Raging One...

TourEgyptdotnet


TECHNOLOGY REVIEW: Egyptian astronomers used what they learned to make predictions about the future. They drew these up in the form of calendars showing lucky and unlucky days.

The predictions were amazingly precise. Each day was divided into three or more segments, each of which was given a rating lying somewhere in the range from very favourable to highly adverse.

One of the best preserved of these papyrus documents is called the Cairo Calendar. Although the papyrus is badly damaged in places, scholars have been able to extract a complete list of ratings for days throughout an entire year somewhere around 1200 BC.

An interesting question is how the scribes arrived at their ratings. So various groups have studied the patterns that crop up in the predictions. Today, Lauri Jetsu and buddies at the University of Helsinki in Finland reveal the results of their detailed statistical analysis of the Cairo Calendar. Their conclusion is extraordinary.

These guys arranged the data as a time series and crunched it with various statistical tools designed to reveal cycles within it. They found two significant periodicities. The first is 29.6 days--that's almost exactly the length of a lunar month, which modern astronomers put at 29.53059 days.

The second cycle is 2.85 days and this is much harder to explain. However, Jetsu and co make a convincing argument that this corresponds to the variability of Algol, a star visible to the naked eye in the constellation of Perseus.

Algol is interesting because every 2.867 days, it dims visibly for a few hours and then brightens up. This was first discovered John Goodricke in 1783, who used naked eye observations to measure the variability.

Astronomers later explained this variability by assuming that Algol is a binary star system. It dims when the dimmer star passes in front of the brighter one.

Nothing else in the visible night sky comes close to having a similar period so it's reasonable to think that the 2.85 and the 2.867 day periods must refer to the same object. "Everything indicated that the two best periods in [the data] were the real periods of the Moon and Algol," say Jetsu and co.


Physics arXiv:
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Post Carbon Society...

 


Being one that grew up during an era of segregation, "the American Dream" I managed to achieve via education and working in an industry that education prepared me quite well for.

 
In an era of "sound-bite politics"; short-sighted goals more concerned with "team victory" than with governing, this documentary should be a part of the debate on education, energy, science and ultimately jobs in this country.

 
As we see the price of gasoline rise at the pump: the price of bringing food to suburbia also rises, as fuel prices rise for the grocers to ship food to their shelves - they transfer that cost to us, a de facto tax irrespective of political party.

 
My fondest childhood memories: my father's "victory garden" he loved to work in our backyard. Literally every vegetable we consumed was grown out back, we then purchased our meats at the grocery store. It saved us much money. Today, it would allow consumers to buy more range-fed poultry and cattle products, healthy as well as a kind of Noble savage protest. In the aftermath of 9-11 and Hurricane Katrina, we're no longer looking for the Cavalry.

 
We may in the end, all need victory gardens...

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More Land, More Moolah...

Keep Bandera Beautiful

If you think saving endangered species is expensive now, just wait a few decades. Climate change will require protected areas to expand if species are to be saved, potentially doubling the cost of such conservation efforts.

 

Rebecca Shaw of the Environmental Defense Fund in San Francisco, California and colleagues studied the Nature Conservancy's Mount Hamilton project, which spans 3200 km2of California. They focused on 11 species in the area with known climate tolerances.

 

They then combined the results of 16 climate models to estimate how the local climate within the project will change between now and 2100. That allowed them to determine how each species' habitat would move, grow or shrink – and thus how much more land would need to be acquired and maintained to preserve them.

 

The analysis suggests that the project will need an extra 2560 km2 of land by 2050. The figure had risen to 3800 km2 by 2100. Shaw estimates the extra cost at $1.73 billion by 2050, and $2.54 billion by 2100. That is slightly more than double the cost of maintaining the project in the absence of climate change.

 

"Mo' money, mo' problems." Biggie Smalls (released posthumously). I say that with some chagrin. Pay now, or pay a LOT later...

 

New Scientist: Climate change will make conservation even pricier

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Alien Sunrise...

Credit: New Scientist

Object: the star HIP 56948

Size: same as the sun

Temperature: same as the sun

Composition: same as the sun

Planets: same as the sun?
 

In the search for other Earths, the main goal is to find a planet the same size as ours that sits in the habitable zone – the region around a given star where planetary surface temperature would be similar to ours, allowing liquid water to exist.


But while an Earth-sized world in one of these habitable zones might have seas and rivers, it would look quite different bathed in blue-white or red light. That could affect the development of life. To exploit the available light, plant leaves could be yellow, orange or red, according to research in 2007 by the Virtual Planetary Laboratory at the California Institute of Technology.

 


Two observations:

  • 200 light years away: this will require breakthrough propulsion physics (blogged on last year), else such a trip is definitely "one-way" only.
  • Hm...that means "eat your spinach" could be even dicier if it's yellow! Just saying...Smiley
 
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