Centaurus A or NGC 5128 is a galaxy in the constellation of Centaurus.
The center of the galaxy contains a supermassive black hole with a mass equivalent to 55 million solar masses, which ejects a relativistic jet that is responsible for emissions in the X-ray and radio wavelengths. By taking radio observations of the jet separated by a decade, astronomers have determined that the inner parts of the jet are moving at about half of the speed of light. X-rays are produced farther out as the jet collides with surrounding gases resulting in the creation of highly energetic particles. The X-ray jets of Centaurus A are thousands of light-years long, while the radio jets are over a million light-years long
Image credit: ESO/ESA/NASA & Hubble
Published on #FITSO Motivation
http://goo.gl/ervKg
“The idea was to put the coil, with reference to the primary, in an inductive connection which was not close—we call it now a loose coupling—but free to permit a great resonant rise. That was the first single step, as I say, toward the evolution of an invention which I have called my “Magnifying Transmitter.” That means, a circuit connected to ground and to the antenna, of a tremendous electromagnetic momentum and small damping factor, with all the conditions so determined that an immense accumulation of electrical energy can take place…
“I mean that you have to have in the circuit, inertia. You have to have a large self-inductance in order that you may accomplish two things: First, a comparatively low frequency, which will reduce the radiation of the electromagnetic waves to a comparatively small value, and second, a great resonant effect. That is not possible in an antenna, for instance, of large capacity and small self-inductance. A large capacity and small self-inductance is the poorest kind of circuit which can be constructed; it gives a very small resonant effect. That was the reason why in my experiments in Colorado the energies were 1,000 times greater than in the present antennae.
“To be more explicit, I take a very large self-inductance and a comparatively small capacity, which I have constructed in a certain way so that the electricity cannot leak out. I thus obtain a low frequency; but, as you know, the electromagnetic radiation is proportionate to the square root of the capacity divided by the self-induction. I do not permit the energy to go out; I accumulate in that circuit a tremendous energy. When the high potential is attained, if I want to give off electromagnetic waves, I do so, but I prefer to reduce those waves in quantity and pass a current into the earth, because electromagnetic wave energy is not recoverable while the earth current is entirely recoverable, being the energy stored in an elastic system. I mean this: If you pass a current into a circuit with large self-induction, and no radiation takes place, and you have a low resistance, there is no possibility of this energy getting out into space; therefore, the impressed impulses accumulate.
“From my circuit you can get either electromagnetic waves, 90 percent of electromagnetic waves if you like, and 10 percent in the current energy that passes through the earth. Or, you can reverse the process and get 10 percent of the energy in electromagnetic waves and 90 percent in energy of the current that passes through the earth.
“It is just like this: I have invented a knife. The knife can cut with the sharp edge. I tell the man who applies my invention, you must cut with the sharp edge. I know perfectly well you can cut butter with the blunt edge, but my knife is not intended for this. You must not make the antenna give off 90 percent in electromagnetic and 10 percent in current waves, because the electromagnetic waves are lost by the time you are a few arcs around the planet, while the current travels to the uttermost distance of the globe and can be recovered.
“This view, by the way, is now confirmed. Note, for instance, the mathematical treatise of Sommerfeld, who shows that my theory is correct, that I was right in my explanations of the phenomena, and that the profession was completely misled. This is the reason why these followers of mine in high frequency currents have made a mistake. They wanted to make high frequency alternators of 200,000 cycles with the idea that they would produce electromagnetic waves, 90 percent in electromagnetic waves and the rest in current energy. I only used low alternations, and I produced 90 percent in current energy and only 10 percent in electromagnetic waves, which are wasted, and that is why I got my results.
“You see, the apparatus which I have devised was an apparatus enabling one to produce tremendous differences of potential and currents in an antenna circuit. These requirements must be fulfilled, whether you transmit by currents of conduction, or whether you transmit by electromagnetic waves. You want high potential currents, you want a great amount of vibratory energy; but you can graduate this vibratory energy. By proper design and choice of wave lengths, you can arrange it so that you get, for instance, 5 percent in these electromagnetic waves and 95 percent in the current that goes through the earth. That is what I am doing. Or you can get, as these radio men, 95 percent in the energy of electromagnetic waves and only 5 percent in the energy of the current. The apparatus is suitable for one or the other method. I am not producing radiation with my system; I am suppressing electromagnetic waves. In my system, you should free yourself of the idea that there is radiation, that the energy is radiated. It is not radiated; it is conserved.”
“Nikola Tesla On His Works With Alternating Currents and Their Application to Wireless Telegraphy, and Transmission of Power.” Twenty First Century Books, Breckenridge, Colorado, 2002.
Remember when I asked for ressources on this? You seemed kind of interested so here is some of the ones I liked - some are in Portuguese and one is in Spanish tho, long live Nuestra América.
I might update it when my friends send me their part of the project.
Reading
YourGenome whole website (x)
National Human Genome Institute website which @cancerbiophd recomended to me - thank you again, it was a great start (x)
Nature: CRISPR gene editing is just the begining (x)
Wyss Institute: Gene drive FAQ (x)
Genetic Home Reference guide sheets (x)
Apostila de Biologia 7 do Hexag Medicina - pgs. 156-179 (x)
Uol: Tudo que você precisa saber sobre CRISPR (x)
Site do Conselho de Informação sobre Biotecnologia (x)
TED talks
TED Ed: How to sequence the human genome - Mark J. Kiel
TED Ed: The race to sequence the human genome - Tien Nguyen
TED: How CRISPR lets us edit our DNA - Jennifer Doudna (who is one of the two women who discovered CRISPR-CAS9 by the way)
TED: Gene editing can now change an entire species forever - Jennifer Kahn
TED: What you need to know about CRISPR - Ellen Jorgensen
TED: How we’re harnessing nature’s hidden superpowers - Oded Shoseyo
Short videos
Unlocking Life’s Code: The Animated Genome (x)
Kurzgesagt: Genetic Engineering Will Change Everything Forever - CRISPR (x) Are GMO Good or Bad? Genetic Engineering & our food (x) Genetic Engineering and Diseases - Gene Drvie & Malaria (x) (They’re all very partial to defending genetic engineering, so you get just one side)
Crash Course: DNA: Structure and Replication (x) DNA: Hot Pockets & The Longest Word Ever (x)
N. Garcia: Composición del genoma Humano (x)
Biologia Total com prof. Jubilut: Mosquito da dengue transgênico (x)
Documentaries
BBC: Playing God
PBS: Cracking your genetic code
GMO OMG (it’s a food conspiracy one I’ll tell you that but it’s intersting)
Model: https://www.instagram.com/dametualma
A naturally occurring alloy of gold and silver (with traces of other metals such as platinum and copper), Electrum has been known about since ancient times and was referred to as pale gold or white gold by the ancient Greeks. Occasionally, in modern times, it is known as green gold. The name comes from the Greek word Elektron, meaning a metallic substance containing silver and gold.
Electrum is a pale yellow or yellow-white in color, and is typically harder and more durable than pure gold. As a naturally occurring alloy, the ratio of gold to silver can vary greatly - the name is mostly applied to compositions between 20-80% gold and 20-80% silver (by atomic weight).
While the properties vary depending on the composition, generally speaking, Electrum has a high reflectivity, good electrical and thermal conductivity, and is ductile and malleable, with decent corrosion resistance.
Historically speaking, this alloy has been used in many coins, but, given the inexact proportions of gold and silver in different coins, it was difficult to set an exact value for Electrum currency and eventually the alloy fell out of use. Much of Electrum’s uses were similar to applications gold was used in, such as coatings, statues, and jewelry.
Sources: ( 1 - image 1 ) ( 2 - image 3 ) ( 3 - image 4 )
Image sources: ( 2 )
“To be fully alive, fully human, and completely awake is to be continually thrown out of the nest. To live fully is to be always in no-man’s-land, to experience each moment as completely new and fresh. To live is to be willing to die over and over again.”
— Pema Chödrön
What each house represents in astrology