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January 31 2015

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Library Burning in Moscow (31 January 2015).
Reposted byvogelxannthingsonfireThianwojtkukfiatipifpafpufwoodynook
R.I.P. Carl Djerassi (October 29, 1923 – January 31, 2015)
Tags: science
Reposted bysciencedna
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The Clearest Photo of a Sunspot Ever Taken

Dynamics in Sunspot Umbra as Seen in New Solar Telescope and Interface Region Imaging Spectrograph Data
by Vasyl Yurchyshyn, Valentyna Abramenko, Ali Kilcik
The Astrophysical Journal, Volume 798, Number 2 (Jan 10, 2015), doi:10.1088/0004-637X/798/2/136 (http://arxiv.org/abs/1411.0192)
Tags: science
Reposted bybesengruetzeastronomygroupPhlogistonztarweirdscenesinsidethegoldminepanpancernybastinat0rpleplesiostraMrWaspflopsboxTokei-IhtoPlattenlegerbrightbytejalokim0zerocool911Blue-singzerocool911the-deviltoken0darksideofthemoonknusperthisgamehasnonameSirenensangdanielbohrerylem235katholnichimtaktstraycatrachelinajoliehairinmysofiasmstrzsl420

January 30 2015

Freemasonry, 1st century CE.
(Museo Archeologico Nazionale, Naples, Italy)
Reposted byBlue-singbesen

January 28 2015

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19th vs 21st century scientist
Reposted fromhannes hannes
Designer friends.
Tags: untagged
Reposted byangry-mushroombesengingergluecataractpleplethisgamehasnonameDTDSRJustuska
Error 404.
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Reposted byTeofolkonifersydnorthomerthkrybussucznikjotcce
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An ancient extrasolar system with five sub-Earth-size planets
by T. L. Campante, T. Barclay, J. J. Swift, et al.
The Astrophysical Journal 799, 170. doi:10.1088/0004-637X/799/2/170, published 27 Januar 2015 (http://arxiv.org/abs/1501.06227)

The chemical composition of stars hosting small exoplanets (with radii less than four Earth radii) appears to be more diverse than that of gas-giant hosts, which tend to be metal-rich. This implies that small, including Earth-size, planets may have readily formed at earlier epochs in the Universe's history when metals were more scarce. We report Kepler spacecraft observations of Kepler-444, a metal-poor Sun-like star from the old population of the Galactic thick disk and the host to a compact system of five transiting planets with sizes between those of Mercury and Venus. We validate this system as a true five-planet system orbiting the target star and provide a detailed characterization of its planetary and orbital parameters based on an analysis of the transit photometry. Kepler-444 is the densest star with detected solar-like oscillations. We use asteroseismology to directly measure a precise age of 11.2+/-1.0 billion years for the host star, indicating that Kepler-444 formed when the Universe was less than 20% of its current age and making it the oldest known system of terrestrial-size planets. We thus show that Earth-size planets have formed throughout most of the Universe's 13.8-billion-year history, leaving open the possibility for the existence of ancient life in the Galaxy. The age of Kepler-444 not only suggests that thick-disk stars were among the hosts to the first Galactic planets, but may also help to pinpoint the beginning of the era of planet formation.
Tags: science
Reposted byschaafFiriathknusperastronomygroupsciencetentacleguyjalokim002mydafsoup-01
Reinhold Löffler (pictures), Ulrich Kühne (texts): "Unsere Besten - Die Promi-Galerie", Elisabeth Sandmann Verlag, München, March 27, 2015, 192 pages, 16.95 Euro (ISBN 978-3945543054)

January 27 2015

Asteroid 2004BL86, which safely flew past Earth on Jan. 26, 2015, has a moon.
Tags: science
Reposted byshallowikariciarkaunfoldedsternenseemannkasiakocimietkaPhlogistonampileinDiviusPhlogistongentlemadmanastronomygroupryskasciencemynniabesenAmericanlovercoloredgrayscaleCarridwenpuszkakeithpeligroTabsladragonsloverpassingbirdjuliwieaugusttentacleguyp0rnoJonae
Claudia Lanfranconi (Ed.): Fliegst du schon oder überlegst du noch. Elisabeth Sandmann Verlag, 2014.(ISBN 978-3938045930)
Tags: readingtip
Reposted byblackandwhitebynlm blackandwhitebynlm
Nelly's: The dancer Nikolska in the Parthenon (1929).
Tags: arts
Reposted byblackandwhitebynlm blackandwhitebynlm
Pigs can fly.
Tags: untagged

January 25 2015


Oldest extant magnetic compass,
from iron meteorite, pin on left side (now bent up) originally pointing North, the engraved figure demonstrates the variation of the length of days over the twelve month of the year (1st row June to January, 2nd row July to December). The object was used as a mobile sundial suspended on a string.

(1st century CE; from the Villa of the Papyri, Herculaneum, now Museo Archeologico di Napoli, Italy; catalog entry: "Object ID #335" in: http://www.ancient-astronomy.org/webapplications/gordon/SundialNavigatorProject/CurrentVersion/index.html)

[Alternative interpretation: bronze plaque to register the curing and aging of ham (bearing no relation to sundials).]
Reposted byastronomygroupsciencejalokim0agravaineQdeugrubymask-and-mirrorhackerfleetbesenzerocool911pleplelvcksphintech

January 17 2015


Why are we short-sighted?
Myopia is among our most common complaints – but have we fundamentally misunderstood its origins and its treatment?

David Robson, BBC, 16 January 2015.

Time outdoors and physical activity as predictors of incident myopia in childhood: a prospective cohort study.

JA Guggenheim, K Northstone, G McMahon, et al.
Investigative Ophthalmoly & Visual Science, May 14; 53(6):2856-65. doi: 10.1167/iovs.11-9091.


Purpose: Time spent in "sports/outdoor activity" has shown a negative association with incident myopia during childhood. We investigated the association of incident myopia with time spent outdoors and physical activity separately.
Methods: Participants in the Avon Longitudinal Study of Parents and Children (ALSPAC) were assessed by noncycloplegic autorefraction at ages 7, 10, 11, 12, and 15 years, and classified as myopic (≤-1 diopters) or as emmetropic/hyperopic (≥-0.25 diopters) at each visit (N = 4,837-7,747). Physical activity at age 11 years was measured objectively using an accelerometer, worn for 1 week. Time spent outdoors was assessed via a parental questionnaire administered when children were aged 8-9 years. Variables associated with incident myopia were examined using Cox regression.
Results: In analyses using all available data, both time spent outdoors and physical activity were associated with incident myopia, with time outdoors having the larger effect. The results were similar for analyses restricted to children classified as either nonmyopic or emmetropic/hyperopic at age 11 years. Thus, for children nonmyopic at age 11, the hazard ratio (95% confidence interval, CI) for incident myopia was 0.66 (0.47-0.93) for a high versus low amount of time spent outdoors, and 0.87 (0.76-0.99) per unit standard deviation above average increase in moderate/vigorous physical activity.
Conclusion: Time spent outdoors was predictive of incident myopia independently of physical activity level. The greater association observed for time outdoors suggests that the previously reported link between "sports/outdoor activity" and incident myopia is due mainly to its capture of information relating to time outdoors rather than physical activity.

Light exposure and physical activity in myopic and emmetropic children.
by Scott A Read, Michael J. Collins, Stephen J.Vincent
Optometry & Vision Science. 91(3):330-341, March 2014.

Purpose: To objectively assess daily light exposure and physical activity levels in myopic and emmetropic children.
Methods: One hundred two children (41 myopes and 61 emmetropes) aged 10 to 15 years old had simultaneous objective measures of ambient light exposure and physical activity collected over a 2-week period during school term, using a wrist-worn actigraphy device (Actiwatch 2). Measures of visible light illuminance and physical activity were captured every 30 seconds, 24 hours a day over this period. Mean hourly light exposure and physical activity for weekdays and weekends were examined. To ensure that seasonal variations did not confound comparisons, the light and activity data of the 41 myopes was compared with 41 age- and gender-matched emmetropes who wore the Actiwatch over the same 2-week period.
Results: Mean light exposure and physical activity for all 101 children with valid data exhibited significant changes with time of day and day of the week (p < 0.0001). On average, greater daily light exposure occurred on weekends compared to weekdays (p < 0.05), and greater physical activity occurred on weekdays compared to weekends (p < 0.01). Myopic children (n = 41, mean daily light exposure 915 ± 519 lx) exhibited significantly lower average light exposure compared to 41 age- and gender-matched emmetropic children (1272 ± 625 lx, p < 0.01). The amount of daily time spent in bright light conditions (>1000 lx) was also significantly greater in emmetropes (127 ± 51 minutes) compared to myopes (91 ± 44 minutes, p < 0.001). No significant differences were found between the average daily physical activity levels of myopes and emmetropes (p > 0.05).
Conclusions: Myopic children exhibit significantly lower daily light exposure, but no significant difference in physical activity compared to emmetropic children. This suggests the important factor involved in documented associations between myopia and outdoor activity is likely exposure to bright outdoor light rather than greater physical activity.
Tags: science
Reposted byscience science

January 16 2015


Bicentennial Map of early GIScience professional, data journalist, and geologist William Smith:

A delineation of the strata of England and Wales. : With part of Scotland; exhibiting the collieries and mines, the marshes and fen land originally overflowed by the sea, and the varieties of soil according to the variations in the substrata, illustrated by the most descriptive names. (Published London: John Cary, 1815.)
Tags: science
Reposted bysciencemapsmajkeybumblebeerunkensteinohmygodthebritishune-raconteuseginger-gatocalineczkadanielbohrernodifference02mydafsoup-01

January 15 2015

The naked Truth freed from the grasp of Falsehood and Envy by grim reaper Time (1737 - completed on the day before the artist’s suicide)

by François Lemoyne, 1688 - 4 June 1737, now Wallace Collection, London.
Reposted bypaintingswecouldbecloserozalkabesenlvcksI-bring-Skeksi-backpanpancerny
Voluntary burning of superstitious books at Ephesus by new converts of St. Paul. (The Roman "Index of Prohibited Books", inner frontispiece of the 1758 edition.)

"Multi autem ex eis, qui fuerant curiosa sectati, contulerunt Libros, et combusserunt coram omnibus. Act. Cap.XIX. V.19"

"19 Many of them also which used curious arts brought their books together, and burned them before all men: and they counted the price of them, and found it fifty thousand pieces of silver. 20 So mightily grew the word of God and prevailed." [Acts 19:19-20, King James Bible]
Tags: politics
Reposted bytoken0atheismadremdicoadremdicoI-bring-Skeksi-back
Executio in effigie

Nomen Erasmi nunquam peribit –

(Destroyers of books and blind executors of barbarous orders there were always. The damnatio memoriae of Erasmus in the 16th-century Indices librorum prohibitorum has reminded us of the fury of the unknown – but certainly Spanish – hand that left its trace in a copy of the Cosmographiae universalis (Basel 1550) of the Spanish Royal Library, now preserved in the Biblioteca Nacional of Madrid.)
Reposted byBlue-singatheism

January 14 2015

"You're a mess, honey."
(Marlene Dietrich, "Touch of Evil", 1958.)
Tags: untagged
Reposted byblackandwhitebynlm blackandwhitebynlm
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