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What is Free Speech in an Online Community?

Often, when we remove an inappropriate post or an offensive member from our Science on Google+ Community, we hear cries of Censorship! and we're accused of violating the right to free speech. This brilliant xkcd cartoon nails the difference between the right to free speech and the rights and responsibilities of community membership.  

As Neil deGrasse Tyson said, "we live in a country that guarantees free speech, but it’s not a country that guarantees that anything you say is correct". 

Sourcehttp://xkcd.com/1357/
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Halit Eroglu

​​​Physical  - 
 
Derivation of fundamental constants of nature: www.hc10.eu

I would like to inform you about a new formula discovered by me.
With this formula I derived all (!) fundamental constants of nature and elementary physical quantities.

A fre e eBook and a formulary with about 170 formulas you can download here: www.hc10.eu
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Intellects

Science News (Pop Sci)  - 
 
Now that STAP are surrounded by controversies, first human clone embryos has been created from skin cells using nuclear transfer technique.

Will it give birth to same issues scientist encountered with Dolly experiment? What about induced turmorigenesis in vivo conditions?
Another step toward having your own reserve of spare stem cells on demand
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Scott Lewis
moderator

Science News (Pop Sci)  - 
 
More info on Murmansk Meteor

Though some are questioning the validity of the footage (io9-- http://goo.gl/ZmbmkP) there are reports that this fireball is from the Lyrid meteor showers, which are to enter its peak in a few days.

More information on that here (in Russian): http://itar-tass.com/spb-news/1133488

#MurmanskMeteor   #Meteor   #Russianmeteor   #Russia   #Fireball
 
Fireball over Murmansk, Russia

Taken from dashboard cameras on two vehicles in the northwest city of Murmansk, Russia, a fireball lit up the night sky in a bluish light. 

As of this post, there have been no confirmations about a meteorite being recovered, or if the object survived its travels through our atmosphere. 

Murmansk is 3300 km northwest of where the Chelyabinsk meteorite exploded overhead on 15 February 2013, where over 1100 people called in for medical assistance resulting from broken glass caused from the shock wave. 

There's also an article on io9 questioning the legitimacy of the video footage. (http://goo.gl/ZmbmkP) Will update with any new developments. h/t +Ciro Villa for the link. 

Original Video & story from +RThttp://rt.com/news/meteorite-murmansk-explosion-space-588/

#Meteor   #RussianMeteor   #Russia   #Murmansk   #Fireball  
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P. McRell

Science News (Pop Sci)  - 
 
 
Have we finally entered a true Space Age because of SpaceX's soft splashdown April 18th?

April 18th, 2014 could now go down in history: SpaceX proved its first rocket stage can be recovered - it is no longer speculation - does this mean the $300Bn Space Industry is primed to explode like aviation did with WW2: tourism, mining, colonization, etc?

From $10,000/kg to $1,000/kg and possibly even $100/kg to get in low Earth Orbit, many risky ventures now seem to be within reach for the intrepid billionaires and movie studios/sponsors committed to them now that reusable rockets from SpaceX appear to be on the cusp of radically changing the game.

http://www.ft.com/intl/cms/s/2/a441d9bc-9d65-11e3-a599-00144feab7de.html#axzz2zLQ6dRvK 

So there are still things that can and will go wrong, there are many challenges left unsolved - just as there always have been when new frontiers were opened. 

Exciting times!
Here we are more than a decade into the 21st century and we’re still not there. To be a child of the 1960s and 1970s was to daydream not only about travelling in space but also about settling there, indefinitely. National space agencies planned
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Intellects

Science News (Pop Sci)  - 
 
In Search of Human Embroynic Cells 
 
Now that STAP are surrounded by controversies, first human clone embryos has been created from skin cells using nuclear transfer technique.

Will it give birth to same issues scientist encountered with Dolly experiment? What about induced turmorogenesis in vivo conditions?


First Human Clone Embryos Created From Adults' Skin Cells

http://www.popsci.com/article/science/first-clone-embryos-created-adults-skin-cells?dom=tw&src=SOC
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Vivax Solutions

Science Bytes (Memes, Cartoons, Images)  - 
 
The Sun, Solar Eclipse and Einstein's Elevation to Stardom

In 1919, thanks to a solar eclipse,  Sir Arthur Eddington, the renowned British astronomer, observed that the light from distant stars does bend while passing through the dipped space-time around massive celestial bodies - the Sun, in this case - as predicted by Einstein in his General Theory of Relativity.

The angle of deviation was close enough to secure Einstein's position in the history of human ingenuity; the genius, who never underestimated the role played by his own intuition in coming up with his theories, became a synonym for human intellect overnight.

The animation shows the real position and the apparent position of a distant star during the solar eclipse, when observed from the Earth.

For further information, please follow the link below:

http://www.earthmagazine.org/article/benchmarks-solar-eclipse-proves-relativity
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Lance Richard

Science Bytes (Memes, Cartoons, Images)  - 
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K McKay
 
That's just like when argon doesn't react to the barrage of insults from hydrogen.
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Pranesh Udhayamani

Science Bytes (Memes, Cartoons, Images)  - 
 
2 tripod walk..nature at its best..
 
How does an ant actually walk on 6 legs?

(thanks to Imgur http://imgur.com/gallery/wQnLshV)
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Pranesh Udhayamani

Science Bytes (Memes, Cartoons, Images)  - 
 
Can you find which side is inside of the mask?
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About this community

Science on Google+ is a community moderated by scientists, for all people interested in science, both professionals and the general public. The primary goal of this community is to bring real scientists to the public, for science outreach. A secondary and long-term goal is to create an environment that fosters interdisciplinary collaborations; thus, enabling and promoting cloud collaboration between scientists. See Guidelines and Rules section for additional details.

Slobodan Gaborović

Science News (Pop Sci)  - 
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The principal role in all efforts in the discrete mathematic is played by the prime numbers always present with their beautiful, powerful, necessary and mysterious irregularity
Link to software page: ANITA 10 | itobuda
Description
This application was developed to be a small tool that works with prime numbers.In this program you will find:
1) PrimeCalculations about prime numbers: How many primes up to N(Phi(N)),lists of prime with index, list of twins, lists of gaps, factorisation
2) DivisorsObtain a Vector indicating for any N < 2147483000 how many numbers there are with 2,3,4,5,6 ....divisors. Obtain lists of numbers characterized by the same number of their divisors. Information on other arithmetical functions and combinatory.
3) Methods of inclusion-exclusion and reverse.Calculate Phi (N) with these two methods.
4)Goldbach conjecturecalculate pairs of prime, mixed and composites
5) Study and examine not formal elementary proofs of the Theorem of Fermat and the problem of 2N as well as the Goldbach conjecture.In particular to understand the proofs one has to read carefully the inclusion-exclusion and reverse methods and some part of the source file.
6) By using options 6 and 7 of the main menu there is the possibility to change the data of the 2 main arrays containing primes and composites. In these cases the program will produce many wrong data. On the base of these errors and absurd results it is possible sometime to arrive to some logical conclusion. Some examples of this usage are given in the next chapters. After these usages it is recommended to restore the arrays with option 8.
All calculations are printed in a file called session 7.dat. If you close the program and run it again the old data are cancelled and the new one are printed in the file session7.dat. If you want to save some data you have to copy them in a new file. The use of the program to obtain lists and data is easy. Follow the instruction given on the screen. Read more on ANITA 10 | itobuda 
image from Wikipedia, Author: Claudio Rocchini
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MIT Proposes Tsunami-Proof Floating Nuclear Plants
Tsunami-proof floating nuclear plants would be designed to be automatically cooled by the surrounding seawater in a worst-case scenario.
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Sagnik Sarkar

Science News (Pop Sci)  - 
 
The Maths Behind Aesthetics

Would you believe me if I told you that Mathematics has a long-standing relationship with aesthetics? You might be balking at me, but I do have support for this claim.

In this blog, I explore the connection between well-known mathematical concepts and aesthetics. I find it amazing that Maths and aesthetics can be associated together.

It makes me question: is Maths all about only calculational procedures, or is there something more to it? I would like to go with mathematician Roger Penrose: there is a deep, hidden insight and beauty in mathematics. It is more than just numbers.
Why do some particular human faces look beautiful? Ask the same question with reference to objects. Artists and researchers alike have been striving to solve this problem for a long time. The study...
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Thank you for this well written and interesting post.
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thisara lakmal

Science News (Pop Sci)  - 
 
 
NASA's Curiosity Mars Rover Views Striated Ground
Martian Landscape With Rock Rows and Mount Sharp This
landscape scene photographed by NASA's Curiosity Mars rover shows rows
of rocks in the foreground and Mount Sharp on the horizon.  Curiosity's
Navigation Camera (Navcam) took the component images for ...
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Pooja Kashyap

​​​Physical  - 
See why all the planets orbit in the same direction, and how the Apollo space missions used gravity to go around the moon and return - on a piece of cloth!? AWESOME!!!
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Bradley Leichtfuss's profile photoRobin Lott's profile photo
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Health News UK

Science News (Pop Sci)  - 
 
Fertility breakthrough: Scientists discover how sperm and egg bind
A discovery by #scientists   has revealed the finding of a protein which enables #sperm   to bind to an egg. This could pave the way for new #contraception   methods and for infertile couples to benefit.

http://www.healthnewsuk.co.uk/uncategorized/scientists-determine-how-egg-and-sperm-merge/

+BiologyCorner +Science Sparks +Fertility Pathways +Fertility Bridges 
A discovery by scientists has revealed the finding of a protein which enables sperm to bind to an egg. This could pave the way for new contraception methods and for infertile couples to benefit. The molecule that was discovered has been named Juno, which is the Roman goddess of fertility. It has been found on the egg’s surface and binds with a protein on the sperm cell which is very similar. When this occurs, it is the first moment of conception...
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Global Tutor

Science Bytes (Memes, Cartoons, Images)  - 
 
 
Pharaoh's Snakes Chemical Reaction

Igniting mercury(II) thiocyanate causes it to decompose into an insoluble brown mass that is primarily carbon nitride, C3N4. Mercury(II) sulfide and carbon disulfide are also produced.
2Hg(SCN)2 → 2HgS + CS2 + C3N4

Flammable carbon disulfide combusts to carbon(IV) oxide and sulfur(IV) oxide:

CS2 + 3O2 → CO2 + 2SO2

The heated C3N4 partially breaks down to form nitrogen gas and dicyan:

2C3N4 → 3(CN)2 + N2

Mercury(II) sulfide reacts with oxygen to form mercury vapor and sulfur dioxide. If the reaction is performed inside a container, you will be able to observe a gray mercury film coating its interior surface.

HgS + O2 → Hg + SO2

Although Pharaoh's snakes are considered a type of firework, they do not explode or even emit sparks. They burn on the ground and release smoky vapors. All aspects of the reaction can be hazardous, including handling the mercury thiocyanate, breathing the smoke or touching the ash column, and contact with the remains of the reaction during clean-up. If you perform this reaction, use appropriate safety precautions for dealing with mercury.

Read: http://chemistry.about.com/od/fireworksprojects/a/pharaohs-snakes.htm

Video: The Strangest and Weirdest Chemical Reaction in the World. (Mercury(II) thiocyanate (Hg(SCN)2))
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Frank D.'s profile photoFrankensport Franken's profile photoWendell Benevides's profile photoJavier Olivares's profile photo
 
Just when you think, it's all burnt up, it produces the same volume out of - nothing? Fascinating.
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Joel Sax

Science News (Pop Sci)  - 
 
Africa is not a name I associate with glaciers, but given enough altitude and the right temperatures at lower elevations, they can happen.
Changes in air temperature, not precipitation, drove the expansion and contraction of glaciers in Africa's Rwenzori Mountains at the height of the last ice age, according to research. The results -- along with a recent study that found air temperature also likely influenced the fluctuating size of South America's Quelccaya Ice Cap over the past millennium -- support many scientists' suspicions that today's tropical glaciers are rapidly shrinking ...
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Radiopulsar

Science News (Pop Sci)  - 
 
Philae take a photograph of Rosetta.
Seen in this photo, solar panels Rosetta against the light, dimly lit by the Sun. The probe which is attached Philae is indeed still 600 million kilometers from our star, between Mars and Jupiter.

Philae photographie Rosetta.
On voit sur cette photo, les panneaux solaires de Rosetta à contre-jour, faiblement éclairés par le Soleil. La sonde auquel est accroché Philae est en effet encore à 600 millions de kilomètres de notre étoile, entre Mars et Jupiter.
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