Reticent

Posts tagged “science”

My 2nd contribution to SciNote touches on a controversial way of extracting fossil fuels. 
scinote:

What is Fracking? How Is It Dangerous?

Fracking has been a hot-button issue among policy-makers, scientists, environmentalists, and the general public alike. But what exactly is fracking?
Fracking, or “hydraulic fracturing”, is a way of extracting the oil or gas that’s embedded in subterranean rocks. It’s achieved by forcing liquid— usually water— through the fissures of those rocks at high pressure.
Jaime Trosper over at From Quark to Quasars provides a good overview of this process. She then answers a lot of questions about fracking, such as:
Does fracking makes economic sense? 
Does it harm the environment?
Does it endanger the communities that live around fracking sites?
Does fracking harm the workers involved in the process?
Click on the image above to read Jamie’s article.

Submitted by Srikar D., Discoverer
Edited by Ashlee R.

My 2nd contribution to SciNote touches on a controversial way of extracting fossil fuels. 

scinote:

What is Fracking? How Is It Dangerous?

Fracking has been a hot-button issue among policy-makers, scientists, environmentalists, and the general public alike. But what exactly is fracking?

Fracking, or “hydraulic fracturing”, is a way of extracting the oil or gas that’s embedded in subterranean rocks. It’s achieved by forcing liquid— usually water— through the fissures of those rocks at high pressure.

Jaime Trosper over at From Quark to Quasars provides a good overview of this process. She then answers a lot of questions about fracking, such as:

  • Does fracking makes economic sense? 
  • Does it harm the environment?
  • Does it endanger the communities that live around fracking sites?
  • Does fracking harm the workers involved in the process?

Click on the image above to read Jamie’s article.

Submitted by Srikar D., Discoverer

Edited by Ashlee R.

The chemistry of Smartphones: What’s in your iPhone?

Spoiler! It is not just Aluminium, plastic, glass, and Silicon.

What is actually in one drop of blood?

scinote:

image

Question:

What is actually in one drop of blood?

Asked bybugs2015

Answer:

Quite a lot, it turns out!

In each drop of blood,roughly 60% is plasma, a liquid containing proteins, nutrients, hormones, and waste products— you know, all the things that blood is so famous for carrying around— dissolved in water.

The other 40% of your blood is made of cells. The most abundant are oxygen-bearing red blood cells (orerythrocytes, if you can pronounce that).Each drop of blood contains around 5 million red blood cells!

But red blood cells aren’t the only cells in that drop of blood. You’ll also find7,000 to 24,000 white blood cells, orleukocytes, which play a key role in your immune system’s ability to protect your body from infection and fight off disease.  There are also around 250,000 platelets, orthrombocytes, which promote blood clotting. should you be bleeding anywhere in your body.

Want to learn more? Trythis videofrom Khan Academy, or check outthis site. Thanks for your question!

Answered by Claire R., Expert Leader.

Edited by Dylan S.

SciNote is quickly become one of my favourite Science blogs. Excellent stuff. 

This world would be much better place if everybody thought like this. 

This world would be much better place if everybody thought like this. 

(via sciencealert)

Real-time map of aurora borealis

mindblowingscience:

Hey guys, I just found out that the NOAA space weather prediction centre has a real time map of the aurora’s that are going on right now due to the X-class solar flare from the sun.

It shows the areas that the aurora is visible from and is updated every 30 seconds.

There is also a map for the south pole.

Enjoy!

WOW! I didn’t have a clue about this resource. Kudos to Tynan Plillips for the find. 

David Bromley has lived with prosopagnosia for the past 15 years, since a brain haemorrhage left him unable to recognise faces. He looks in the mirror and sees himself before the injury. He sees himself on TV and thinks, “Who’s that old man”. Prosopagnosia has just been recognised by Britain’s National Health Service as a condition. Julian Keane spoke to David Bromley on Newsday.

scinote:

Just how big is the Sun?

The Sun is large enough that approximately 1.3 million Earths could fit inside, if squashed in. If the Earths retain their spherical shape, 960,000 Earths would fit.
But can you visualize that number of Earths?
Click on the picture above to see what 1.3 million Earths look like.

Submitted by space-facts
Edited by Margaret G.

scinote:

Just how big is the Sun?

The Sun is large enough that approximately 1.3 million Earths could fit inside, if squashed in. If the Earths retain their spherical shape, 960,000 Earths would fit.

But can you visualize that number of Earths?

Click on the picture above to see what 1.3 million Earths look like.

Submitted by space-facts

Edited by Margaret G.

ucresearch:

Seeing a supernovae within hours of the explosion
For the first time ever, scientists have gathered direct evidence of a rare Wolf-Rayet star being linked to a specific type of stellar explosion known as a Type IIb supernova. Peter Nugent of the Lawrence Berkeley National Laboratory says they caught this star – a whopping 360 million light years away – just a few hours after it exploded.
Hear more about this discovery →

WOW! This is a great discovery. 

ucresearch:

Seeing a supernovae within hours of the explosion

For the first time ever, scientists have gathered direct evidence of a rare Wolf-Rayet star being linked to a specific type of stellar explosion known as a Type IIb supernova. Peter Nugent of the Lawrence Berkeley National Laboratory says they caught this star – a whopping 360 million light years away – just a few hours after it exploded.

Hear more about this discovery →

WOW! This is a great discovery. 

The Principal of Invariant Light Speed

scinote:

Question:

Is it possible that outside of our frame of reference, we are traveling at the speed of light, but we don’t sense it because everything else in our frame of reference (the observable universe) is also traveling at the speed of light?

Asked by the-apiarist

Answer:

Great question! The Principal of Invariant Light Speed, one of Einstein’s postulates, states that the speed of light in a vacuum is constant no matter the frame of reference. Therefore, no matter the observer, the speed of light provides the same limitations on motion.

In short, probably not. It isn’t entirely impossible, but our current knowledge of the universe makes it highly improbable.

To read more about the Principle of Invariant Light Speed, please click here.

What do you think? Let us know by reblogging or commenting on this post.

Answered by Olivia D., Expert Leader

Edited by Ashlee R.

Invariant light speed is such a counter-intuitive concept so misconceptions about the things related to the speed of light is quite common. But people who are much smarter than us can explain these concepts to us in plain language, thankfully.

scinote:

How far is a light-year?

If you do the math, one light-year is about 9.5 trillion kilometres (5.88 trillion miles). But how can one comprehend and visualise such a huge number? Bruce McClure of Earthsky.org reveals an ingenious way to visualise the said number by way of mathematical coincidence.
It turns out that the number of inches in a mile is equal to the number of astronomical units in a light-year. One astronomical unit is the average distance between the sun and the earth, which amounts to 150 million kilometres or 93 million miles.
Click on the picture above to discover more.

Submitted by Srikar D., Discoverer.
Edited by Mark S.

This is my first contribution to Scinote. Hope i did a good job with the summary. 

scinote:

How far is a light-year?

If you do the math, one light-year is about 9.5 trillion kilometres (5.88 trillion miles). But how can one comprehend and visualise such a huge number? Bruce McClure of Earthsky.org reveals an ingenious way to visualise the said number by way of mathematical coincidence.

It turns out that the number of inches in a mile is equal to the number of astronomical units in a light-year. One astronomical unit is the average distance between the sun and the earth, which amounts to 150 million kilometres or 93 million miles.

Click on the picture above to discover more.

Submitted by Srikar D., Discoverer.

Edited by Mark S.

This is my first contribution to Scinote. Hope i did a good job with the summary.