linkedin post 2021-03-02 05:10:31
POLYPLOID FERNS. “Three different cytotypes, diploid, triploid, and tetraploid, occur within the fern species Polypodium vivginianum or rock polypody.” https://lnkd.in/dthseww View in LinkedIn
linkedin post 2021-03-04 06:29:06
Called dandylion after dent de lion, teeth of the lion, which describes the shape of the leaves. View in LinkedIn
linkedin post 2021-03-02 05:07:03
THE CODE. “What is the algorithm running on the laptop of the Universe? If such an algorithm exists, I would argue that it should be a simple one defined on the discrete spacetime lattice. The complexity and richness of the Universe come from the enormous memory size and CPU power of the laptop, but the algorithm itself could be simple." https://lnkd.in/dZi_jmp View in LinkedIn
linkedin post 2021-03-04 06:27:43
SEA CHANGE EMERGING. “Eureka machine' puts scientists in the shade by working out laws of nature. The machine, which took only a few hours to come up with Newton's laws of motion, marks a turning point in the way science is done.” (Professor Hod Lipson). https://www.theguardian.com/science/2009/apr/02/eureka-laws-nature-artificial-intelligence-ai View in LinkedIn
linkedin post 2021-03-04 06:26:50
CORE MODEL. “It is anticipated that the interior constitution of quark stars is expressed by MIT bag model equation of state (EoS).” https://www.sciencedirect.com/science/article/pii/S0577907319309773 View in LinkedIn
linkedin post 2021-03-04 06:25:38
ASYMMETRIC STARS. “In the analysis of structural properties of compact objects, anisotropic matter configuration plays a crucial role. Since the compact objects possess dense cores and have densities much larger than the nuclear density, therefore, pressure should be anisotropic in the interior region of celestial bodies.” https://www.sciencedirect.com/science/article/pii/S0577907319309773 View in LinkedIn
linkedin post 2021-03-04 06:24:14
TRANSITORY STARS. “The structure of neutron stars with less dense core provides an opportunity to transform into quark stars. The densest compact objects composed of up, down and strange quark matter are named as quark stars.” https://www.sciencedirect.com/science/article/pii/S0577907319309773 View in LinkedIn
linkedin post 2021-03-06 04:36:45
RED LEAD. “Minium, also known as red lead, is a bright orange red pigment that was widely used in the Middle Ages for the decoration of manuscripts and for painting. It was made by roasting white lead pigment in the air; the white lead would gradually turn yellow, then into an orange lead tetroxide. The color varied depending upon how long the mineral was roasted. Minium of red lead was sometimes called stupium in classical Latin.” https://lnkd.in/dYDtahT) View in LinkedIn
linkedin post 2021-03-06 04:34:21
MAKING RED LEAD. “Grind flake-white (note: lead oxide) on a stone without water, then put it in two or three new pots and place it over a burning fire. You have a slender curved iron rod, fitted at one end with a wooden handle and broad at the top, and with this you can stir and mix this flake-white from time to time. You do this for a long time until the red lead becomes completely red.” https://lnkd.in/d7yzXt5 View in LinkedIn
linkedin post 2021-03-06 04:31:24
FRAGMENT FROM NATURE continues from last weekend and concludes this weekend on a mediaeval text about the practiced crafts of the day, including the diverse ranges of metallurgy, glassmaking including windows, and painting, particularly making paints, primers, glues and varnishes. It gives a remarkable insight into the resourceful and self-sufficient trades who had to make everything that they needed from scratch, sometimes planning a season ahead to get necessary plants in early spring. In particular, the toxic exposures they endured were unthinkable today, View in LinkedIn