Degrees of carbonate hardness (dKH or °KH; the K is from the German Karbonathärte) is a unit of water hardness, specifically for temporary or carbonate hardness. Carbonate hardness is a measure of the concentration of carbonates such as calcium carbonate (CaCO3) and magnesium carbonate (MgCO3) per volume of water. Specifically, 1 dKH is defined as 17.86 milligrams (mg) of calcium carbonate per litre of water, i.e. 17.86 ppm. Since a mole of calcium carbonate weighs 100.09 grams, 1 dKH is equivalent to 0.17832 mmol per litre. dKH are the same as °fH, degrees of French hardness. (Wikipedia).
DesmosLIVE: An Exploration of Desmos + Mathalicious
Kate Nowak of Mathalicious explores a few Mathalicious lessons with Desmos
From playlist Desmos LIVE
月周回衛星「かぐや」のHDTVが観測したアルキメデス (C)JAXA/NHK
From playlist Earth's place in Solar System - Jaxa
月周回衛星「かぐや」のHDTVが観測したオリエンタレ・ベイスン (C)JAXA/NHK
From playlist Earth's place in Solar System - Jaxa
#Mandala MANDALA LOVERS ALERT- Mandala (Sanskrit: मण्डल, lit, circle) is a spiritual and ritual symbol in Indian religions, representing the universe-check out more videos about mandala below-. * check out my Blog Post for details on Mandala supplies- https://www.theartgeekblog.com/post/mu
From playlist Bag
What Is a radian? Coffee ☕️ + Desmos 🙂 this AM = https://www.desmos.com/calculator/bcgjcpci3k. Also added to https://teacher.desmos.com/activitybuilder/custom/60742b18afd8ae0d274b6efb.
From playlist Desmos Activities, Illustrations, and How-To's
月周回衛星「かぐや」のHDTVが観測した雨の海と虹の入り江 (C) JAXA/NHK
From playlist Earth's place in Solar System - Jaxa
Upper bounds for constant slope p-adic families of modular forms -John Bergdall
Joint IAS/Princeton University Number Theory Seminar Topic: Upper bounds for constant slope p-adic families of modular forms Speaker: John Bergdall Affiliation: Bryn Mawr College Date: January 31, 2019 For more video please visit http://video.ias.edu
From playlist Mathematics
DEFCON 19: Black Ops of TCP/IP 2011
Speaker: Dan Kaminsky Chief Scientist, DKH Remember when networks represented interesting targets, when TCP/IP was itself a vector for messiness, when packet crafting was a required skill? In this thoroughly retro talk, we're going to play with systems the old fashioned way, cobbling tog
From playlist DEFCON 19
Speaker: DAN KAMINSKY CHIEF SCIENTIST, DKH If there's one thing we know, it's that we're doing it wrong. Sacred cows make the best hamburgers, so in this year's talk I'm going to play with some techniques that are obviously wrong and evil and naive. There will also be a lot of very intere
From playlist DEFCON 20