3 nanosecondi dopo i nostri guai

3 nanosecondi dopo i nostri guai

spaceplasma:

Tesla Museum To Be Built At Recently Purchased Wardenclyffe Laboratory

The last remaining laboratory of scientist, visionary and inventor Nikola Tesla has been sold this week by the Agfa Corporation to Friends of Science East, Inc. dba Tesla Science Center at Wardenclyffe. Tesla Science Center at Wardenclyffe is a 501 (c) 3 not-for-profit corporation dedicated to saving and restoring Wardenclyffe, with the aim of turning it into a science learning center and museum.

Wardenclyffe is a 15.69 acre site in Shoreham, New York, where Tesla planned to build his wireless communications and energy transmission tower in the early 1900s. The tower was completed, but only one test was made in July 1903. Shortly after, Tesla suffered some financial reversals, and in 1917, the tower was taken down and sold for scrap metal.

Tesla was one of the most influential scientists of the late 19th and early 20th century. His contributions to commercial electricity, radio, magnetism and the invention of the AC (alternating current) motor helped to usher in the Second Industrial Revolution. He also made contributions to the fields of robotics, remote control, radar, computer science, ballistics, nuclear physics and theoretical physics. Nikola Tesla was one of the most famous scientists of his time in the United States, “but because of his eccentric personality and somewhat unbelievable and bizarre claims about scientific and technological developments, Tesla became disliked and was regarded as a mad scientist.”

Tesla is perhaps best known today for the controversy over the invention of the radio. A debate still rages between Tesla supporters and those who favor Guglielmo Marconi over who truly invented the first radio. According to the US Supreme Court in 1947, it was Tesla.

Newsday reports Friends of Science East, Inc. partnered with online comic Matthew Inman of TheOatmeal.com in August 2012 to host an online crowdfunding project on Indiegogo.com. They raised $1.37 million towards the purchase price of the Wardenclyffe site. The campaign reached the $1 million mark in just over a week, with the help of 33,000 contributors from 108 countries.

“This is a major milestone in our almost two-decade effort to save this historically and scientifically significant site. We have been pursuing this dream with confidence that we would eventually succeed,” said Gene Genova, Vice President of the organization, in a recent statement. “We are very excited to be able to finally set foot on the grounds where Tesla walked and worked.”

Friends of Science East, Inc. isn’t done yet, though.

“Now begin the next important steps in raising the money needed to restore the historic laboratory,” said Mary Daum, treasurer. “We estimate that we will need to raise about $10 million to create a science learning center and museum worthy of Tesla and his legacy. We invite everyone who believes in science education and in recognizing Tesla for his many contributions to society to join in helping to make this dream a reality.”

The organization is planning many fundraising events in the future to raise the capital to restore and run the site as a museum. You can find more information on these events on their website, at the Facebook page, and via Twitter.

(via thescienceofreality)

ikenbot:

The Current Types of Nebulae

Originally, the word “nebula” referred to almost any extended astronomical object (other than planets and comets). The etymological root of “nebula” means “cloud”. As is usual in astronomy, the old terminology survives in modern usage in sometimes confusing ways. We sometimes use the word “nebula” to refer to galaxies, various types of star clusters and various kinds of interstellar dust/gas clouds. More strictly speaking, the word “nebula” should be reserved for gas and dust clouds and not for groups of stars.

By order in which they appear from top to bottom, left to right, here are the main types and some provided examples for visual reference:

Planetary Nebulae: Sh2-188

Planetary nebulae are shells of gas thrown out by some stars near the end of their lives. Our Sun will probably evolve a planetary nebula in about 5 billion years. They have nothing at all to do with planets; the terminology was invented because they often look a little like planets in small telescopes. A typical planetary nebula is less than one light-year across.

Dark Nebulae: LDN 1622

Dark nebulae are clouds of dust which are simply blocking the light from whatever is behind. They are physically very similar to reflection nebulae; they look different only because of the geometry of the light source, the cloud and the Earth. Dark nebulae are also often seen in conjunction with reflection and emission nebulae. A typical diffuse nebula is a few hundred light-years across.

Emission Nebulae: NGC 896

Emission nebulae are clouds of high temperature gas. The atoms in the cloud are energized by ultraviolet light from a nearby star and emit radiation as they fall back into lower energy states (in much the same way as a neon light). These nebulae are usually red because the predominant emission line of hydrogen happens to be red (other colors are produced by other atoms, but hydrogen is by far the most abundant). Emission nebulae are usually the sites of recent and ongoing star formation.

Reflection Nebulae: NGC 1333

Reflection nebulae are clouds of dust which are simply reflecting the light of a nearby star or stars. Reflection nebulae are also usually sites of star formation. They are usually blue because the scattering is more efficient for blue light. Reflection nebulae and emission nebulae are often seen together and are sometimes both referred to as diffuse nebulae.

(Source: kenobi-wan-obi, via thescienceofreality)

fotojournalismus:

Istanbul June 18, 2013 : ‘standing man’ protests

1. People stand on the flashpoint Taksim Square in Istanbul on June 18, 2013 during a wave of new alternative protests. (Bulent Kilic/AFP/Getty Images)

2. People stand on the flashpoint Taksim Square in Istanbul on June 18, 2013 during a wave of new alternative protests. In Istanbul, dozens of demonstrators switched to silent protests, standing still in quiet defiance in the main Taksim Square located next to the Gezi Park. (Bulent Kilic/AFP/Getty Images)

3. Anti-goverment protestors stands on Taksim square after Turkish choreographer Erdem Gunduz’ (not in picture) lone protest on June 18, 2013 in Istanbul. Gunduz stood for several hours unnoticed before his presence on the flashpoint square went viral on the social network Twitter. He was then joined by hundreds of others who in solidarity decided to join his protest by standing for hours on end. (Ozan Kose/AFP/Getty Images)

4. People stand on the flashpoint Taksim Square in Istanbul on June 18, 2013 during a wave of new alternative protests. (Marco Longari/AFP/Getty Images)

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