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2009!!! : Neurotopia - 50 Best Science Blog Posts Middle School Chemistry | Download Free Science Activities, Access Chemistry Multimedia, Find Information on Workshops Find the Alcohol Contents of Beer, Wine, and Liquor 5 TED Talks on Science That Will Blow Your Mind Andrew Maynard is a scientist and emerging technology adviser. He blogs at 2020 Science and tweets as @2020science. Some of the most entertaining, informative and mind-blowing science videos on the web come from TED – the Technology, Entertainment, Design conference. To make things easier, here are five of my favorite TED Talks on science. - Was I engaged within the first few seconds? 1. What on earth do coral, complex mathematics and the craft of crochet have in common? 2. Four billion years of evolution have led to organisms that can reproduce, survive the harshest environments, and convert simple chemicals into complex ones. 3. Is there life on other planets? 4. Why are scientists so excited about smashing subatomic particles together at near-light velocities? 5. Finally, the big picture. These five TED talks on science tell a story about the complexity of the universe and our place in it. See also: 13 Twits Who Will Change Your Perspective on Reality

Aldehydes and Ketones Drinking methanol is harmful, not because of the CH 3 OH molecule s themselves, but rather because the human body converts these molecules into methanal (formaldehyde) molecules by combination with oxygen: Formaldehyde, H 2 CO, is very reactive—in the pure state it can combine explosively with itself, forming much larger molecules. Consequently it is prepared commercially as a water solution , formalin, which contains about 35 to 40 percent H 2 CO. Formalin is made by combining methanol with air at 550°C over a silver or copper catalyst . The functional group found in formaldehyde is called a carbonyl group . Chemical tests may be performed to determine the presence of a carbonyl group. The reaction that occurs is: Another test can distinguish between aldehydes and ketones. Tollens reagent is an aqueous solution of silver nitrate, sodium hydroxide, and a little ammonia. The endings al and one signify al dehyde and ket one , respectively. , while for a ketone it is .

10 Books that will Substitute A Computer Science Degree | Techoozie Chemistry News Feb. 15, 2024 — Scientists have developed a new method to measure and remove sulfate from water, potentially leading to cleaner waterways and more effective nuclear waste ... Feb. 14, 2024 — Researchers have succeeded in biomanufacturing from chemically synthesized sugar for the first time in the world. With refinement of this technology, one can envision a future society in which the ... Feb. 13, 2024 — Since the turn of the century, six new chemical elements have been discovered and subsequently added to the periodic table of elements, the very icon of chemistry. Feb. 13, 2024 — The properties of supramolecular polymers are dictated by the self-assembled state of the molecules. Feb. 13, 2024 — Scientists have discovered that a known practice in information technology can also be applied to chemistry. Feb. 12, 2024 — You can mend a broken heart this valentine s day now that researchers invented a new hydrogel that can be used to heal damaged heart tissue and improve cancer ...

Science Toys Lune A lune is a plane figure bounded by two circular arcs of unequal radii, i.e., a crescent. (By contrast, a plane figure bounded by two circular arcs of equal radius is known as a lens.) For circles of radius and whose centers are separated by a distance , the area of the lune is given by where is the area of the triangle with side lengths , and . In each of the figures above, the area of the lune is equal to the area of the indicated triangle. Hippocrates also proved that, in the figure above, the sum of the areas of the two colored lunes is equal to the area of the triangle (Pappas 1989, pp. 72-73). where the lengths of the horizontal and vertical legs of the triangle are , respectively.

Everywhere in a Flash: The Quantum Physics of Photosynthesis | Wired Science By hitting single molecules with quadrillionth-of-a-second laser pulses, scientists have revealed the quantum physics underlying photosynthesis, the process used by plants and bacteria to capture light’s energy at efficiencies unapproached by human engineers. The quantum wizardry appears to occur in each of a photosynthetic cell’s millions of antenna proteins. These route energy from electrons spinning in photon-sensitive molecules to nearby reaction-center proteins, which convert it to cell-driving charges. Almost no energy is lost in between. “The analogy I like is if you have three ways of driving home through rush hour traffic. Scholes’ findings, published Wednesday in Nature, are the strongest evidence yet for coherence — the technical name for multiple-state existence — in photosynthesis. Two years ago, researchers led by then-University of California at Berkeley chemist Greg Engel found coherence in the antenna proteins of green sulfur bacteria. Images: 1. See Also: