#1955

tord_dellsen@diasp.eu

July 9 - World Beyond War Peace Almanac

On this day in 1955, Albert Einstein, Bertrand Russell and seven other scientists warned that a choice must be made between war and human survival. Distinguished scientists the world over, including Max Born of Germany, and French Communist Frederic Joliot-Curie, joined Albert Einstein and Bertrand Russell in an attempt to abolish war. The Manifesto, the last document Einstein signed before his death, read: “In view of the fact that in any future world war nuclear weapons will certainly be employed, and that such weapons threaten the continued existence of mankind, we urge the governments of the world to realize, and to acknowledge publicly, that their purpose cannot be furthered by a world war, and we urge them, consequently, to find peaceful means for the settlement of all matters of dispute between them.” Former U.S. Secretary of Defense Robert McNamara expressed his own fear that a nuclear catastrophe was inevitable unless nuclear arsenals were dismantled, noting: “The average U.S. warhead has a destructive power 20 times that of the Hiroshima bomb. Of the 8,000 active or operational U.S. warheads, 2,000 are on hair-trigger alert…The U.S. has never endorsed the policy of ‘no first use,’ not during my seven years as secretary or since. We have been and remain prepared to initiate the use of nuclear weapons–by the decision of one person, the president….the president is prepared to make a decision within 20 minutes that could launch one of the most devastating weapons in the world. To declare war requires an act of Congress, but to launch a nuclear holocaust requires 20 minutes’ deliberation by the president and his advisors.”

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#otd #1955 #WorldBeyondWar #peace #NuclearWar #NuclearWeapons

ramnath@nerdpol.ch

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#Lizardite

t is triclinic, has one direction of perfect cleavage, and may be white, yellow or green. Lizardite is translucent and soft, and may be pseudomorphous after enstatite, olivine or pyroxene, in which case the name bastite is sometimes applied. Bastite may have a silky lustre.

Lizardite was named by Eric James William Whittaker and Jack Zussman in #1955 after the place it was first reported, the Lizard Peninsula, (from the Cornish: An Lysardh) in southern #Cornwall, England, United Kingdom.

Scyelite is a synonym of lizardite

Crystal system Trigonal
Color Green, brown, light yellow to white
Mohs scale hardness 2.5
Luster Resinous, waxy, greasy
Streak White
Specific gravity 2.55
[Wikipedia]

Chemical Formula: Mg3Si2O5(OH)4
Magnesium Silicate Hydroxide

Lizardite is a member of the #Serpentine Group of minerals that also includes Antigorite and Chrysotile. These three minerals are polymorphous, meaning they have essentially the same chemistry but different structures. Antigorite is a fairly common member of the group, but Lizardite is the most abundant Serpentine. The Serpentine Group is a subgroup of the Kaolinite-Serpentine Group. At a Moh’s hardness of only 2.5 it is very soft, but its bright, apple green colors make for beautiful cabochons for collectors.
[https://nationalgemlab.in/lizardite/]