Nice
This shows a valid method for computing square roots without using a calculator, and can be used to solve this question. This document was written by Prof. Jeff Forshaw
Ивтересно
PEOPLE OF THE ANCIENT WORLD: Lucius Verus (Marcus Aurelius’ Co-Emperor)
LUCIUS Verus (161-169 CE) was Marcus Aurelius’ adopted brother and co-emperor, a man whose time on the throne is overshadowed by the reign of the last of the Five Good Emperors.
In the final years of the Pax Romana, a period of almost two centuries of relative peace and stability following the rule of Augustus, a young Stoic philosopher, Marcus Aurelius, came to the throne in 161 CE, and for the first time in the empire’s short history he chose to have someone rule at his side; his adopted brother Lucius Verus.
The future emperor Lucius Ceionius Commodus was born in 130 CE and raised in Rome, the eldest son of the one-time consul Lucius Aelius Caesar.
Read More
Article by Donald L. Wasson on AHE
Lightweight Black Hole
😊
Patagonian fossil leaves reveal rapid recovery from dinosaur extinction event http://www.geologypage.com/2016/11/patagonian-fossil-leaves-reveal-rapid-recovery-dinosaur-extinction-event.html
The Boatyard at Saint Mammes by Alfred Sisley
Size: 38.8x56 cm
Yowah Koroit Boulder Opal | #Geology #GeologyPage #Opal #Mineral
83.10Ct Natural Australian Queensland Yowah Koroit Boulder Opal
Dimensions (mm): 37.5 x 18.3 x 12mm
Locality: Queensland, Australia
Photo Copyright © opalauctions
Geology Page www.geologypage.com
Dancer with a Fan by Edgar Degas
Medium: pastel
Rue Mosnier decorated with Flags by Edouard Manet
Medium: oil on canvas
Stardust in the Perseus Molecular Cloud Image Credit & Copyright: Lorand Fenyes
Explanation: Clouds of stardust drift through this deep skyscape. The cosmic scene spans nearly 2 degrees across the Perseus molecular cloud some 850 light-years away. A triangle of dusty nebulae reflecting light from embedded stars is captured in the telescopic field of view. With a characteristic bluish color reflection nebula NGC 1333 is at left, vdB13 at bottom right, and rare yellowish reflection nebula vdB12 lies at the top. Stars are forming in the Perseus molecular cloud, though most are obscured at visible wavelengths by the pervasive dust. Still, hints of contrasting red emission from Herbig-Haro objects, the jets and shocked glowing gas emanating from recently formed stars, are evident in NGC 1333. At the estimated distance of the molecular cloud, legs of the triangle formed by the reflection nebulae would be about 20 light-years long.
∞ Source: apod.nasa.gov/apod/ap170114.html
Интересно
Ancient rocks hold evidence for life before oxygen http://www.geologypage.com/2016/11/ancient-rocks-hold-evidence-life-oxygen.html
Nice
Scans of the inside covers of Strang’s Calculus, which you can legally-download for free here from the MIT website. This is my all-time favorite math or physics textbook. Scanned it so I could cut and paste it into my new sketchbook, wanna try and make a ~cool artistic~ reference poster out of it, ‘cuz I’ve been real into that idea since I took notes about rings for the algebra midterm on a big piece of watercolor paper.