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https://wis-wander.weizmann.ac.il/chemistry/day-science-history-discovery-viruses-–-“-filterable-agents”1221892
February 12, 2015
On 12/2/1892, the first evidence for the existence of viruses was presented: Dimitri Ivanovsky, a young Russian scientist, suggested before the Academy of Sciences of St. Petersburg the existence of a disease agent smaller than any known before. This revelation was the...
https://wis-wander.weizmann.ac.il/space-physics/quantum-attraction
February 17, 2015
Even a perfect vacuum is not truly empty. If you could observe that vacuum on the quantum, atomic or subatomic scale, you would see a “bubbling soup” of "ghost" particles. Known as “virtual particles,” they randomly pop in and out of existence in the empty space; and they cause...
https://wis-wander.weizmann.ac.il/life-sciences/when-genes-conspire-cause-disease
March 16, 2015
It has been known for a while that schizophrenia has a strong genetic component: The proof comes from studies of identical twins. But when researchers look for genes associated with the disease, they are confronted with a profound muddle: Hundreds of genes appear to be i...
https://wis-wander.weizmann.ac.il/weizmann-tree-search
February 18, 2015
אתר העצים בבנייה This page is under construction...
https://wis-wander.weizmann.ac.il/life-sciences/victory-numbers
February 23, 2015
We tend to think of cancer as a single disease, but in fact, there are dozens of different cancers, each caused by a specific set of genetic defects. An international team headed by Weizmann Institute researchers has identified a previously unknown defect that occurs in certain b...
https://wis-wander.weizmann.ac.il/space-physics/unlikely-pairs
February 23, 2015
“Can two walk together, except they be agreed?” (Amos 3:3) The prophet Amos believed in a rational, ordered world, in which everything can be explained by cause and effect. That ideal fits the world of science – once in a...
https://wis-wander.weizmann.ac.il/chemistry/working-under-pressure
March 11, 2015
No man-made lubricant can even come near to meeting the daily demands we make of our joints. As we run or walk, the surfaces of the cartilage in our hip and knee joints slide over one another at high pressures. And they do so over and over, every day, for many decades. Two n...
https://wis-wander.weizmann.ac.il/life-sciences/cold-war-against-cancer
March 11, 2015
Prof. Lea Eisenbach is a pioneer in the field of cryoimmunotherapy. As its name suggests, this approach combines two forms of treatment: cryosurgery, from the Greek cryo, for “icy cold,” and immunotherapy, which harnesses the tools of the immune system. The combination o...
https://wis-wander.weizmann.ac.il/science-teaching/chemistry-teachers-kilimanjaro
March 19, 2015
"Pula, pula – slowly, slowly.” Tanzanian chemistry teachers use this expression to talk about their efforts to improve chemistry education in a place where there is not always running water or sewage treatment, and where Internet connections may be sporadic – if they e...
https://wis-wander.weizmann.ac.il/space-physics/short-day-saturn
March 26, 2015
If you could jump a spaceship out past Mars and Jupiter to Saturn, pass by its rings and somehow park on the planet’s gaseous surface, how long would your day be there? This question, surprisingly, has not been precisely answered until now. The measurements – including those from...
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The Sun
18.11.2020
Times of Israel
18.11.2020