A Glimpse of the sun’s power II: How the rainbows are formed?

Added content regarding the origins of the acronym Roy G. Biv! 🙂

Gleams of Knowledge

You found out how the auroras are formed. Now you will learn about rainbows.

Rainbows are not formed in the practical meaning of existence, i.e. they are not real. They belong to what we usually call optical illusions. Rainbows are caused by the reflection and refraction of light in water droplets. After this the light scatters into different colors because different colours have different wavelengths. This means that they will leave the water droplet at different angles hence making a “colour palette” (ROG. BIV). [1]

What is even more interesting is that the rainbows are full circles… Want to know more? Watch this two videos of SciShow!

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As always I hope you learnt something new! 🙂 [2]


Extra:

Minutephysics has just made a wonderful video explaining the origins of the acronym ROG. BIV. Watch it!

I’m…

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You Asked: Is Cracking Your Knuckles Bad?

Is cracking your knuckles bad? Now you know 🙂

TIME

From fingers and toes to necks and knees, everyone knows a “cracker.” And most habitual joint poppers have heard rumors their habit may cause arthritis. But are those rumors true?

First, a quick anatomy lesson: Many of your joints—including those that allow your fingers to beckon or point—feature small pockets or gaps that are filled with synovial fluid. Like axle grease, this fluid allows the bones that commingle in your joints to glide close to one another without grating, explains Dr. Pedro Beredjiklian, chief of hand and wrist surgery at Philadelphia’s Rothman Institute.

When you pull, twist or otherwise “crack” a joint, you’re expanding the volume of space between your bones, Beredjiklian says. That volume expansion creates negative pressure, which sucks the synovial fluid into the newly created space. This sudden inflow of fluid is the popping you feel and hear when you crack a knuckle, he adds.

The more…

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Sustain your emotions!

In this days, we need to be motivated. People are living stressful moments with no time to appreciate life. We often forget others and get to a point of being machines. We keep doing what we think we have to do for assuring our wealth. In spite of this we don’t feel well with ourselves. Actually as we untangle our ties we happen to face sorrow.

Not all of us are able to admit or even ackowledge this changes. However myriad of studies have found that we need to be linked to the world arround us, we have to find shared values in others and only this can make us living. Quoting Alan Watts

“I don’t know who I am unless I know who you are. And you don’t know who you are unless you know who I am.”

Don’t filter the world, by filtering it in the way it convenes you, you are distorsing reality. The world will never be the way you want it to be so you have always to make an effort to change what is wrong. When you stop trying and you trick yourself into believing that it isn’t your duty to help others you automatically stop being an human. To be human is to share humanitarian help, is to strengthen your relations with others, is to dream, is to prevent what is wrong and whenever you don’t do this you are being inhuman. Alan Watts also said:

“The more you give it away the more it comes back.”

We are empathy beings which means that when we see someone happy we share their happiness, when we see someone suffering we feel that suffer, when we see someone loving we feel that loving and so forth. Even thought we have this mechanism in our organism we forgot how to use it because we repressed it. When this happen, when you arrive to this state of being you stop feeling. You can have children and you won’t feel anything for them, you can have your soul-mate with you and you won’t feel nothing This is the one and only reason for divorces, for depression and for everything that makes you feel miserable.

 

 

 

The Price of Staying Alive For the Next 3 Hours

The Price of Staying Alive For the Next 3 Hours” hold my attention because it’s a well written article with essential information regarding health care!

TIME

How much do you reckon you’d pay not to be dead three hours from now? That probably depends. If you’re 25 and healthy, a whole lot. If you’re 95 and sickly, maybe not so much. But for people in one part of the world—the former East Germany—the cost has been figured out, and it’s surprisingly cheap: three hours of life will set you back (or your government, really) just one euro, or a little below a buck-thirty at current exchange rates.

That’s the conclusion of a new study out of Germany’s Max Planck Institute, and it says a lot about the power of a little bit of money now to save a lot of suffering later—with implications for all manner of public health challenges, including the current Ebola crisis.

The new findings are a result of one of the greatest, real-time longitudinal studies ever conducted, one that began the moment…

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TED moments!

We love TED, it shares new ideas based on the activity of renown scientists, economists, artists, etc… It makes knowledge more accessible so we are proud to everyday share with you a TED video. Hope you enjoy it!

15/10/2014

Have you ever heard about curators? Do you know how they work? In this TED you’ll find how William Noel the Curator of Manuscripts and Rare Books at the Walters Art Museum have found an incredible hidden gem and hiw he and is team manage to restore the original data. [1] This “gem” was a chartaceous cultural heritage from our antecessor Archimedes. This unique and elegant talk provide you a peep in the recovery of artefacts.


References and further reading.

[1] – Archimedes – Walters Art Museum

Quoting Corner!

A place for quotes from renown people. Quotes for meditation and acquiring different perspectives. Everyday quotes!

15/10/2014

“The philosophers have only interpreted the world, in various ways. The point, however, is to change it.” – Karl Marx

Karl Marx - International Institute of Social History in Amsterdam
Karl Marx – International Institute of Social History in Amsterdam