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Author Topic: Science is Amazing - a thread for Science Nerds  (Read 8200 times)
HutchGF
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« on: February 11, 2017, 07:44:14 PM »

Inspired by Tighty's post related to the pushing of the Milky Way across the galaxy I thought we could have a thread to post any and all Science related news. As I'm sure some of you know I am a Science teacher by trade and run a Science debate club at my school for the future medical students and engineers in our 6th form.

To give you a taste, we discussed whether Science has a responsibility to explore the unexplored corners of our Earth, such as the Moville Cave in Romania, which despite having a poisonous atmosphere and having been isolated from the rest of the world for 5.5 million years, appears to be teeming with life.

http://www.bbc.com/earth/story/20150904-the-bizarre-beasts-living-in-romanias-poison-cave

I'm always looking for topics we can discuss and if anyone comes across anything interesting on the travels across the interweb please post it in this thread.

Here's a little something my students have had fun with - I defy anyone to spend 5 minutes with this and not have their minds blown.

http://htwins.net/scale2/

A recent topic for discussion was a thought experiment I set the class :

If we poured a glass of water into the North Sea and returned one year later and scooped up a glass of water from the sea, what is the likelihood of there being at least one molecule of water from the original glass in there?

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muckthenuts
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« Reply #1 on: February 12, 2017, 12:02:23 AM »


Here's a little something my students have had fun with - I defy anyone to spend 5 minutes with this and not have their minds blown.

http://htwins.net/scale2/


I definitely lost hard. That's incredible!
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teddybloat
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« Reply #2 on: February 12, 2017, 12:18:56 AM »

i could hear a dawkins suffix to the title of the thread in my head when i first read it:



re the molecules in the ocean question, i am sure i read that there are many more molecules in a glass of water than there are glasses of water in the worlds oceans. And that when you drink a glass of water you are almost certainly ingesting water molecules that passed through hitler's urinary tract. I may have remember some of the details, but that was the thrust of the article
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« Reply #3 on: February 12, 2017, 12:20:24 AM »

Great thread.

Subscribed.
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Dewi_cool
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« Reply #4 on: February 12, 2017, 12:30:20 AM »

excellent
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tikay
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« Reply #5 on: February 12, 2017, 02:07:58 AM »


This'll be terrific, thanks Hutch.
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Steve Swift
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« Reply #6 on: February 12, 2017, 09:46:13 AM »

Inspired by Tighty's post related to the pushing of the Milky Way across the galaxy I thought we could have a thread to post any and all Science related news. As I'm sure some of you know I am a Science teacher by trade and run a Science debate club at my school for the future medical students and engineers in our 6th form.

To give you a taste, we discussed whether Science has a responsibility to explore the unexplored corners of our Earth, such as the Moville Cave in Romania, which despite having a poisonous atmosphere and having been isolated from the rest of the world for 5.5 million years, appears to be teeming with life.

http://www.bbc.com/earth/story/20150904-the-bizarre-beasts-living-in-romanias-poison-cave

I'm always looking for topics we can discuss and if anyone comes across anything interesting on the travels across the interweb please post it in this thread.

Here's a little something my students have had fun with - I defy anyone to spend 5 minutes with this and not have their minds blown.

http://htwins.net/scale2/

A recent topic for discussion was a thought experiment I set the class :

If we poured a glass of water into the North Sea and returned one year later and scooped up a glass of water from the sea, what is the likelihood of there being at least one molecule of water from the original glass in there?



woooooooooooooooooow, link sent to Grandkids  TY
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Jon MW
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« Reply #7 on: February 12, 2017, 09:54:27 AM »

My fiancee is a final year Biology student at Imperial College London she is hoping to get the option to write a science blog on bad science on TV and in film. If she gets this option and people would be interested I'll post the link here.

'Fun' biology fact of the day: the clinical symptoms of Cholera aren't caused by the bacteria Vibrio cholerae, they are instead caused by a virus that infects the bacteria causing it to release the cholera toxin.

Also here's an interesting video - more interesting when someone explains what is going on as you're going through but I think you can still appreciate the imagery without Smiley
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tikay
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« Reply #8 on: February 12, 2017, 11:00:00 AM »



^^^

Have read more books than enough o cells, DNA & so forth, but I still find it impossible to grasp the smallness of these things.

For perspective, the human body contains ten trillion cells. And there is stuff inside cells. Think how small THAT must be.

Same applies to DNA. I don't know how accurate this is, but.....

Genes are composed of DNA, and it is predicted that there are over 3 billion basepairs in the human genome. Humans have approximately 10 trillion cells, so if you were to line all of the DNA found in every cell of a human body it would stretch from the earth to the sun 100 times
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HutchGF
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« Reply #9 on: February 13, 2017, 07:14:05 PM »

Imagine the scene............ you are a single celled organism that inconveniently has half its life cycle in the human circulatory system and half in its insect vector. How do you make sure that passing mosquitoes feed on the human you're currently residing in?

Why make a molecule that makes the infected human blood extra tasty of course!

https://www.sciencenews.org/article/malaria-molecule-makes-blood-extra-alluring-mosquitoes?tgt=nr
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HutchGF
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« Reply #10 on: February 13, 2017, 07:18:03 PM »

i could hear a dawkins suffix to the title of the thread in my head when i first read it:



re the molecules in the ocean question, i am sure i read that there are many more molecules in a glass of water than there are glasses of water in the worlds oceans. And that when you drink a glass of water you are almost certainly ingesting water molecules that passed through hitler's urinary tract. I may have remember some of the details, but that was the thrust of the article

You are indeed correct sir. We used some mathematical wizardry involving Avagadro's constant and calculated that the number of molecules of water in my Periodic Table mug was vastly bigger than the number of mugfuls of water in the North Sea.

Of course, we cannot take diffusion into account and we can only ever calculate a probability based answer as the molecules will always be in random motion. Awkward buggers.
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HutchGF
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« Reply #11 on: February 14, 2017, 10:47:42 AM »

My fiancee is a final year Biology student at Imperial College London she is hoping to get the option to write a science blog on bad science on TV and in film. If she gets this option and people would be interested I'll post the link here.

'Fun' biology fact of the day: the clinical symptoms of Cholera aren't caused by the bacteria Vibrio cholerae, they are instead caused by a virus that infects the bacteria causing it to release the cholera toxin.

Also here's an interesting video - more interesting when someone explains what is going on as you're going through but I think you can still appreciate the imagery without Smiley


Fantastic video! Would definitely be interested in reading your fiance's blog. I used to get so mad at shows like early CSI with their incorrect DNA stuff!
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tikay
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« Reply #12 on: February 14, 2017, 10:50:59 AM »


Can't contribute much, but I'm in awe reading this tuff.
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tikay
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« Reply #13 on: February 14, 2017, 11:04:07 AM »


This was excellent - explained in a way even I could grasp, but not dumbed down too much.

The Presenter was very likeable, & it was a great piece of TV.

Uranium - twisting the dragons tail



http://www.dailymotion.com/video/x323med
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« Reply #14 on: February 14, 2017, 11:19:25 AM »

This might not br correct, but from my observation, a red blood cell is about midway between the biggest and smallest things we can measure.
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