background preloader

1o Semestre 2019

Facebook Twitter

How do you prove something?

What even is proof? In science, the word "proof" is used rarely and with great care. Scientists accept that the natural world is full of surprises, and what appears to be true may have exceptions. In the law courts, proof often includes a caveat, such as "on the balance of probabilities" for civil matters, and "beyond reasonable doubt" for criminal cases. But to mathematicians like the University of Melbourne's Dr. Consider Pythagoras' Theorem. We all learn in school that the square of the longest side of a right-angled triangle is the sum of the squares of the two other sides.

You could do this for a thousand triangles and you'll see that it's true for every one of those thousand triangles. But does Pythagoras' Theorem work for every possible right-angled triangle? You can't measure every right-angled triangle that exists, so the ruler and calculator method cannot definitively prove Pythagoras right. The University of Melbourne team is no stranger to proofs. Dr. Estrutura da Tabela Periódica - Portal do Clube da Química. Orbitals: Crash Course Chemistry #25. Atomic orbital. Mathematical function that describes the wave-like behavior of either one electron or a pair of electrons in an atom The shapes of the first five atomic orbitals are: 1s, 2s, 2px, 2py, and 2pz.

Atomic orbital

The two colors show the phase or sign of the wave function in each region. These are graphs of ψ(x, y, z) functions which depend on the coordinates of one electron. Quantum Numbers, Atomic Orbitals, and Electron Configurations. O cérebro precisa se 'emocionar' para aprender - Francisco Mora. Especialista em Neuroeducação aposta na mudança de metodologias, mas pede cautela na aplicação da neurociência na educação “É preciso acabar com o formato das aulas de 50 minutos” – Francisco Mora A neuroeducação, disciplina que estuda como o cérebro aprende, está dinamitando as metodologias tradicionais de ensino. Sua principal contribuição é que o cérebro precisa se emocionar para aprender e, de alguns anos para cá, não existe ideia inovadora considerada válida que não contenha esse princípio. No entanto, uma das maiores referências na Espanha nesse campo, o doutor em Medicina Francisco Mora, recomenda cautela e adverte que na neuroeducação ainda há mais perguntas do que respostas.

Mora, autor do livro Neuroeducación. A entrevista é de Ana Torres Menárguez, publicada por El País, 21.2.2017. Eis a entrevista: How To Cram For Your Exam (Scientific Tips) Artist paints self-portrait while on different drug every day, gets brain damage. Bryan Lewis Saunders In March 1995, artist Bryan Lewis Saunders began creating at least one self-portrait of himself every day.

Artist paints self-portrait while on different drug every day, gets brain damage

Born in Washington D.C. but living on and off in Tennessee, in 2000 he set out to look for "experiences that might profoundly affect my perception of self" — and he came up with an experiment titled "Under The Influence" that did just that. "Every day I took a different drug or intoxicant and drew myself under the influence," he states on his website. He was the subject of a documentary called "Art of Darkness" about the experience - which, he says, left him lethargic and with "mild brain damage that wasn't irreparable," which he told Business Insider meant "psychomotor retardation and confusion.

" Diálogos do Brincar #6 - Brincar é reencantar a infância, com Ute Craemer. What is inside the moon. Moon formation. Peso da terra. Escape velocity. In physics (specifically, celestial mechanics), escape velocity is the minimum speed needed for a free object to escape from the gravitational influence of a massive body.

Escape velocity

It is slower the further away from the body an object is, and slower for less massive bodies. The escape velocity from Earth is about 11.186 km/s (6.951 mi/s; 40,270 km/h; 36,700 ft/s; 25,020 mph; 21,744 kn)[1] at the surface. More generally, escape velocity is the speed at which the sum of an object's kinetic energy and its gravitational potential energy is equal to zero;[nb 1] an object which has achieved escape velocity is neither on the surface, nor in a closed orbit (of any radius). With escape velocity in a direction pointing away from the ground of a massive body, the object will move away from the body, slowing forever and approaching, but never reaching, zero speed.

Once escape velocity is achieved, no further impulse need be applied for it to continue in its escape. When given an initial speed Overview[edit] Amazing Electron Microscope Images Part 2. HOW IT WORKS: The International Space Station. Molecules. Download Facebook Videos Online. Conexão Repórter (08/10/17) A Cegueira de Claude Monet. Quando um cantor perde a voz, ele se aposenta.

A Cegueira de Claude Monet

Também o pintor que não enxerga deve abandonar a pintura, mas isso eu sou incapaz de fazer. Claude Monet. Gecko paw micrography. The Amazing Microscopic World. Inner Life Of A Cell - Full Version.mkv. Cutting steel magnified and slowed down. Sharpening knife - observation in the microscope.