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Ionic Compounds: Predicting Ion Charges and Empirical Formulas
This tutorial covers how to predict the charges of commonly formed ions using the periodic table and also how to determine empirical formulas for ionic compounds.
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President Bill Clinton answers the question "What is the most important thing you have learned?" at the Global Education and Skills Forum 2014.
Transcript -- I think the most important thing that I have learned is that there's more to learn. That we should -- that we should all be hungry for a lifetime. I mean, for example, at my next birthday I'll be 68. All the great scientific discoveries made by all the great geniuses were largely made when they were in their 20s and 30s. And yet I became, about two years ago, obsessed with particle physics and I was determined to understand it before I died. I could not have done that if I hadn't learned to read when I was young. If I hadn't had the opportunity to study science courses in my high school, and I lived in the second poorest state in the United States, which most people my age in my state did not have. I happened to go to a bigger high school with people who understood we had to get good science and math teachers there.
And if I hadn't gone to, in my case, Georgetown University, which was a Jesuit University, and I hadn't been subject to the kind of rigors that the Jesuits imposed which made me realize that however much I thought I knew and however smart I was I didn't know very much and I wasn't very smart. I had a lot to learn. So that's the most important thing I learned that your brain is a gift. And we now know that people well into their late 60s and 70s can form new neural networks. So that even though your brain begins to shrink in your 30s, and does throughout your life, since none of us ever use even close to half of our brainpower we got a lot left and we will on our last day on earth we'll have a lot left.
So, the idea that we now know, as a scientific measure because of all the brain scanning technology that we can form these networks and that we form them best, we're most likely to form new neural networks later in life by learning something new. So if -- I said I was interested in particle physics and also in astrophysics and I'm trying to figure out what it means that we've located 20 planets outside our solar system in the last five years that seem to have enough density and be far enough away from their sons that they might be able to support life. That may be the answer to the Russia Ukraine problem; an attack from outer space will immediately unite us all.
Members of Congress in the U.S. will immediately start hugging each other and singing Kumbaya. But anyway, I can form new neural networks doing that because I don't know anything about it, or I didn't when I started. A theoretical physicist would do better going to Suzuki piano lessons with his grandchild or her grandchild and just playing if you knew nothing about music. But this is an incredible thing that the most important thing I learned is that it's important to keep on learning. That you should stay hungry and that the greatest gift can be even as your body begins to fail if your minds still working you need to use it.
Produced by Jonathan Fowler
Meiosis is a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes (the sex cells, or egg and sperm). In humans, body (or somatic) cells are diploid, containing two sets of chromosomes (one from each parent).
This animation outlines the process of osmoregulation as covered in Unit 2.6 of the WJEC GCSE Biology curriculum - Role of Kidney in homeostasis.
This animation was created by Access Pharmacy through the Science of Medicines at Cardiff University.
Adding numbers for children
Learn everything about Energy in detail with Dr. Binocs.
Hello friends, feeling all energetic? So tune into today's episode and know amazing things about Energy with your very own Dr. Binocs!
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Pop'n'Olly - PopnOlly - Pop N Olly | What is Discrimination?
In this video we discover what discrimination means and provide a few examples. We also talk about discrimination and the law.
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What are examples of silent letters?
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In English pronunciation, a silent letter—a term used informally—is a letter or letter combination of the alphabet that is usually not pronounced in a word. Examples include the b in subtle, the c in scissors, the g in design, the t in listen, and the gh in thought.
to give or provide the meaning of; explain; explicate; elucidate: to interpret the hidden meaning of a parable. to construe or understand in a particular way: to interpret a reply as favorable. to bring out the meaning of (a dramatic work, music, etc.)
What is inference? We learn about some things by observing or experiencing them first-hand. In contrast, when we make inferences, we reach conclusions based on evidence and reasoning. We figure things out by applying our own knowledge and experience to the situation at hand.
“Biodegradable” refers to the ability of things to get disintegrated (decomposed) by the action of micro-organisms such as bacteria or fungi biological (with or without oxygen) while getting ****imilated into the natural environment.
The kidney and urinary systems help the body to eliminate liquid waste called urea, and to keep chemicals, such as pot****ium and sodium, and water in balance. Urea is produced when foods containing protein, such as meat, poultry, and certain vegetables, are broken down in the body.
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Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
A genetically modified organism (GMO) is an animal, plant, or microbe whose DNA has been altered using genetic engineering techniques. For thousands of years, humans have used breeding methods to modify organisms. Corn, cattle, and even dogs have been selectively bred over generations to have certain desired traits.
