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Danielle Rojas
Attends Columbia University
Lives in New York City


Danielle Rojas

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I'm very excited about uses like this of Glass. I think this is where it's going to shine the most -- in lots of critical tasks where you have to have your hands free, and you just need a steady stream of side data. That can be anything from doctors in an ER, to mechanics repairing a car, to gate agents at airports. The uses can blossom out from there.

(Also, for those not familiar with it, the picture here happens to show one important feature of Glass: you can tell when people are actually using it. You can see their screen right there. Likewise, if they're taking a picture, there's a little picture/recording LED. This is not surveilling you in secret!)
Google Glass can be used to check emails or search for information on the move. It can also apparently be used to save lives. The Boston Globe reports that Dr. Steven Horng, working at Boston's...
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Danielle Rojas

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Magic Sand or Hydrophobic Sand

Magic sand, Moon Sand, Mars Sand, Space Sand, Sqand or Aqua Sand is a toy made from sand coated with a hydrophobic compound. The presence of this hydrophobic compound causes the grains of sand to adhere to one another and form cylinders (to minimize surface area) when exposed to water. As soon as the sand is taken out of water, it is completely dry and flows freely.

These properties are achieved by covering ordinary beach sand, which contains tiny particles of pure silica, and exposing them to vapors of trimethylsilanol (, an organosilicon compound. Upon exposure, the trimethylsilane compound bonds to the silica particles while forming water. The exteriors of the sand grains are thus coated with hydrophobic groups.

Magic sand was originally developed to trap ocean oil spills near the shore. This would be done by sprinkling Magic sand on floating petroleum, which would then mix with the oil and make it heavy enough to sink. However, due to the expense of production, it is not being used for this purpose. It has also been tested by utility companies in the Arctic areas as a foundation for junction boxes, as it never freezes. It can be also used as an aerating medium for potted plants.

Magic sand is made in blue, green, or red in colors but appears silvery in water because of a layer of air that forms around the sand, making it unable to get wet.

Earliest reference to waterproof sand can be found in a 1915 book called The Boy Mechanic Book 2 put out by Popular Mechanics. The Boy Mechanic states waterproof sand was invented by East Indian magicians. The sand was made by mixing heated sand with melted wax. The wax would repel the water when the sand was exposed to water.

Text source:

The animated gif has been obtained from this video, entitled Hydrophobic Sand - QI - Series 10 Episode 10 - BBC Two:
Hydrophobic Sand - QI - Series 10 Episode 10 - BBC Two

Watch the video of how to make Magic Sand: How to make Magic Water-Proof Sand (Magic Sand)

Further reading: Magic Sand Experiment from the American Chemical Society 

Further video: 'Magic Sand'

#chemistry #hydrophobic_sand #science #sciencesunday
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Danielle Rojas

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10 Important Google URLs That Every Google User Should Know

"Where can you get a list of every ad that you have clicked on Google?

 Where should you go if you don’t remember your administrator password? What are your interests as determined by Google?

Here are 10 important links that every Google user should know about. They are tucked away, somewhere deep inside your Google dashboard..."

Learn more at

#Googletips #Google   #Plushelp  
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I'm excited for this new feature. It's yet another way to personalize Google services to best fit the user and still be easily accessible.

P.S. I'm totally adding Google Scholar as an app  #howstudentssavetime  
Now you can get to your favorite Google products even faster by customizing how they appear in your Google bar. Just drag and drop to rearrange the apps and bring your favorite products to the top.

You can also easily add Google products that aren’t part of the Google bar, like Google Keep and Google Scholar. Learn more:

We're rolling this out over the next couple weeks, so please hold tight if you aren't seeing it yet.
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Danielle Rojas

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If you had a seahorse, what do you name him/her?
Nico Nieuwendijk's profile photoNero Boyce's profile photoDanielle Rojas's profile photoCarlos Sanchez's profile photo
B.O.B lol
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Crime and Punishment parody, starring Batman.

Read the comic here:

#crimeandpunishment   #dostoevsky   #batman   #comics
On Friday, Fyodor Dostoyevsky's Crime and Punishment topped our crowdsourced list of Books Intelligent People Should Read.  If you haven't read Dostoyevsky's classic novel of murder and guilt, you should give it a go.
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h/t to +Aaron Helton.
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Danielle Rojas

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Happy birthday to chemist and medical pioneer Percy Julian! Julian’s research in the field of drug synthesis from plants led to the development and production of important steroids like cortisone.
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Danielle Rojas

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Google's Stock Split

Google shares closed at $1,135.10/share yesterday and is currently $581.61/share. This is a result of Google's stock split. "[Larry Page, Sergey Brin, and Eric Schmidt] own Class B shares, which wield 10 times the voting power of class A stock, which is what traded on the public markets until April 3 under the ticker GOOG. Post-split, these shares will trade under the ticker GOOGL, while the new, non-voting Class C stock will take over the GOOG ticker." Basically, the split will allow the company's majority voting power to remain in the hands of Google's founders and Chairman.
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The construction is complicated; not many investors will understand it but they will know that "complicated" means it's to their disadvantage. "Complicated" always is; that's the one and only purpose of making things complicated, no matter what.

This arrangement might work, as long as the boys don't want to cash in, or die. Very dangerous. Suppose they have an accident tomorrow and die? Who's got the power then? Their wives? It wouldn't be the first time the market punishes a stock for manipulations like this, when circumstances change and become bad.

Wasn't Google about not evil, simple, and all that? Pfff. I don't agree with Business Insider about this being smart.
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Happy International Women's Day! Celebrated every year on March 8, we're getting started a little early with our doodle, now live on homepages around the world. This truly international doodle features 100+ inspiring women from around the world, including the President of Lithuania, a brave Pakistani education activist, the most recorded artist in music history and an ever-curious explorer. See the full list of women on our doodle site:
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Danielle Rojas

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Google's latest Easter egg: blink html
Head to Google, search for blink html, enjoy!
Abbigayle Francis's profile photoNico Nieuwendijk's profile photoCarlos Sanchez's profile photoAbiodun Simmons's profile photo
lool am loving it
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Lover of technology, neuroscience, and a good story.
Hi, my name is Danielle. I am not a fan of introductions because the only way to truly know a person is through conversation, not a paragraph of characteristics. With that said, there are two things you need to know about me:
Part one: I love to read and do it obsessively.
Part two: Bookworms like me aren't just dreamers. We're teaching ourselves how to live. Narratives have formed my character, and will continue to do so in every chapter of my life.
If you choose to circle me, be warned that I do not have a set theme. Sometimes I post about Google (very often actually), sometimes the mind&brain, sometimes books, sometimes images I drew for  DrawSomething (the game), and sometimes food. There might also be the occasional "look at how adorable my sister is" post, or a share of something I found funny/interesting. I think it goes without saying (but I'll say it anyway) that this is a personal account; the posts are reflective of my opinions and interests, and not that of my employer or institution. 
I love discussions so please feel free to share your opinions on my post, whether you agree or disagree. If you find yourself with some extra time, be sure to check out my blog too.
Have a nice day, and don't forget to smile!
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I don't have an account on Twitter, Facebook, LinkedIn, or any other social media -- only a Google+ Profile. That's a plus!
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