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-   -   Official "Science News" Thread (https://www.mersenneforum.org/showthread.php?t=12197)

Flatlander 2013-03-22 06:53

It's the repeated realisation that QM etc. is what reality actually [I]is[/I] that freaks me out. I'm like the proverbial goldfish that rediscovers the ornaments every 30 seconds and is amazed again.

This is, IMHO, far more jaw-dropping than any far-fetched :wink: future applications.

rogue 2013-03-26 15:05

[URL="http://arstechnica.com/science/2013/03/flash-memory-chip-built-out-of-single-atom-thick-components/"]Flash memory chip built out of single-atom-thick components[/URL]

[URL="http://www.washingtonpost.com/world/europe/telescope-that-sees-big-bangs-afterglow-sees-older-universe-in-glimpse-of-first-split-second/2013/03/21/ada16076-920e-11e2-9173-7f87cda73b49_story.html"]
Big Bang’s afterglow shows universe is 80 million years older than scientists first thought[/URL]

[URL="http://www.mentalfloss.com/article/49612/lego-paper-airplane-folder"]The LEGO Paper Airplane Folder[/URL]

rogue 2013-04-02 15:46

[URL="http://scitechdaily.com/discovery-may-lead-to-the-creation-of-biofuel-from-co2-in-the-atmosphere/"]Discovery May Lead to the Creation of Biofuel from CO2 in the Atmosphere[/URL]

[URL="http://www.nature.com/news/planck-snaps-infant-universe-1.12671?WT.ec_id=NATURE-20130328"]Planck snaps infant Universe[/URL]

[URL="http://web.mit.edu/newsoffice/2013/volcanic-eruptions-triggered-end-triassic-extinction-0321.html"]Huge and widespread volcanic eruptions triggered the end-Triassic extinction[/URL]

[URL="http://news.sciencemag.org/sciencenow/2013/03/bees-buzz-each-other-but-not-the.html"]Bees Buzz Each Other, but Not the Way You Think[/URL]

[URL="http://scitechdaily.com/a-new-kind-of-invisibility-cloak-demonstrates-better-cloaking-efficiency/"]A New Kind of Invisibility Cloak Demonstrates Better Cloaking Efficiency[/URL]

[URL="http://www.theatlantic.com/entertainment/archive/2013/03/the-hidden-poetic-genius-of-an-old-english-nursery-rhyme/274370/"]The Hidden Poetic Genius of an Old, English Nursery Rhyme[/URL]

ewmayer 2013-04-02 22:42

[QUOTE=rogue;335828][URL="http://web.mit.edu/newsoffice/2013/volcanic-eruptions-triggered-end-triassic-extinction-0321.html"]Huge and widespread volcanic eruptions triggered the end-Triassic extinction[/URL][/QUOTE]

This is like finding a guy lying dead in a pool of his own blood and concluding "loss of blood killed him". Uh yeah, but how did the blood get from inside to outside? Maybe this gunshot wound here?

In the above case - Sure, but what caused the mass wave of volcanism? Was it spontaneous - perhaps the result of a gigantic anomalous mantle plume - or did it have an external trigger? This topic led to an interesting discussion around these parts late last year [url=http://mersenneforum.org/showthread.php?t=17570]in this thread[/url], starting with post 19.

rogue 2013-04-09 23:30

[URL="http://www.vtnews.vt.edu/articles/2013/04/040413-cals-hydrogen.html"]Breakthrough in hydrogen fuel production could revolutionize alternative energy market[/URL]

[URL="http://www.sciencenews.org/view/generic/id/349372/description/Dream_contents_deciphered_by_computer"]Dream contents deciphered by computer[/URL]

[URL="http://www.slate.com/blogs/bad_astronomy/2013/04/03/dark_matter_experiment_on_the_space_station_hints_at_wimpy_dark_matter.html"]Tantalizing Hints of WIMPy Dark Matter[/URL]

[URL="http://www.sci-news.com/biology/article00969.html"]Neuroscientists Discover New Molecular Mechanism for Long-Term Memory Formation[/URL]

science_man_88 2013-04-09 23:57

[QUOTE=rogue;336583][URL="http://www.vtnews.vt.edu/articles/2013/04/040413-cals-hydrogen.html"]Breakthrough in hydrogen fuel production could revolutionize alternative energy market[/URL]

[URL="http://www.slate.com/blogs/bad_astronomy/2013/04/03/dark_matter_experiment_on_the_space_station_hints_at_wimpy_dark_matter.html"]Dream contents deciphered by computer[/URL]

[URL="http://www.slate.com/blogs/bad_astronomy/2013/04/03/dark_matter_experiment_on_the_space_station_hints_at_wimpy_dark_matter.html"]Tantalizing Hints of WIMPy Dark Matter[/URL]

[URL="http://www.sci-news.com/biology/article00969.html"]Neuroscientists Discover New Molecular Mechanism for Long-Term Memory Formation[/URL][/QUOTE]

these 2:

[COLOR=black]Dream contents deciphered by computer[/COLOR]
[COLOR=black] [/COLOR]
[COLOR=black]Tantalizing Hints of WIMPy Dark Matter[/COLOR]

go to the same url the first one is wrong.

rogue 2013-04-10 00:51

[QUOTE=science_man_88;336586]these 2:

[COLOR=black]Dream contents deciphered by computer[/COLOR]
[COLOR=black] [/COLOR]
[COLOR=black]Tantalizing Hints of WIMPy Dark Matter[/COLOR]

go to the same url the first one is wrong.[/QUOTE]

The correct link is [URL="http://www.sciencenews.org/view/generic/id/349372/description/Dream_contents_deciphered_by_computer"]this.[/URL]

LaurV 2013-04-11 03:38

Thanks for sharing. That with the dark mater is very interesting, a subject which always fascinated me. The one with the "microbes" producing hydrogen at over 100% efficiency... seems a bit an April Fool prank. I am still skeptical about it. More research (on the web) is needed. (edit: the date is April 4, too, and there is a high probability it was reproduced after a few-days old article appeared somewhere else, without checking).

cheesehead 2013-04-11 05:43

[QUOTE=LaurV;336692]The one with the "microbes" producing hydrogen at over 100% efficiency... seems a bit an April Fool prank.[/quote]... or just sloppy thinking.

xilman 2013-04-11 06:25

[QUOTE=LaurV;336692]The one with the "microbes" producing hydrogen at over 100% efficiency... seems a bit an April Fool prank.[/QUOTE]But not obviously impossible.

Heat pumps also work at >100% efficiency because they extract otherwise useless heat from the environment to add to the useful energy put into driving the pump.

As I read the article, the situation here is analogous. Useful energy in the form of xylose is augmented by otherwise useless warmth from the environment to produce hydrogen which may be burnt to create more energy than could be produced by burning the sugar itself.

retina 2013-04-11 07:17

[QUOTE=xilman;336703]But not obviously impossible.

Heat pumps also work at >100% efficiency because they extract otherwise useless heat from the environment to add to the useful energy put into driving the pump.

<snip>[/QUOTE]It would seem to be dependant upon one's method of measuring efficiency. In an overall sense there can never be anything >100% (discounting the over unity crazy folk) due to the fundamental laws of physics. But for a system like described above generally we are essentially ignoring the fact of the heat conversion because the heat is considered wasted and thus not included in the efficiency measurements.


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