Ionospheric sounding - Wikipedia. In telecommunication and radio science, an ionospheric sounding is a technique that provides real-time data on high-frequency ionospheric-dependent radio propagation, using a basic system consisting of a synchronized transmitter and receiver.
See also References This article incorporates public domain material from the General Services Administration document "Federal Standard 1037C". Say WHAT? By Keith McDowell As former Vice President Spiro Agnew famously said, “In the United States today, we have more than our share of the nattering nabobs of negativism.
Philosophy of science. Welcome to Science of Science Policy. SAGE Journals: Your gateway to world-class journal research. Thomas Henry Huxley - Wikipedia. Thomas Henry Huxley PC PRS FLS (/ˈhʌksli/; 4 May 1825 – 29 June 1895) was an English biologist (comparative anatomist), known as "Darwin's Bulldog" for his advocacy of Charles Darwin's theory of evolution.
Hydrogen sulfide. Hydrogen sulfide often results from the prokaryotic breakdown of organic matter in the absence of oxygen gas, such as in swamps and sewers; this process is commonly known as anaerobic digestion.
H 2S also occurs in volcanic gases, natural gas, and in some sources of well water. It is also present in natural halite type rock salts, most notably in Himalayan Black Salt, which is mostly harvested from the mineral-rich Salt Range mountains of Pakistan. The human body produces small amounts of H 2S and uses it as a signaling molecule. Philosophers want to know why physicists believe theories they can’t prove — Quartz. It’s often assumed that physics and philosophy are at opposite ends of the academic spectrum.
In fact, they’re close—so close that they can overlap, with professors sometimes switching between the two fields as they work to advance our understanding of highly abstract subjects in theoretical physics. The debate about Rupert Sheldrake's talk.
Octopus genome holds clues to uncanny intelligence. Norbert Wu/Science Faction/Corbis The octopus genome offers clues to how the creatures evolved intelligence to rival the craftiest vertebrates.
With its eight prehensile arms lined with suckers, camera-like eyes, elaborate repertoire of camouflage tricks and spooky intelligence, the octopus is like no other creature on Earth. Added to those distinctions is an unusually large genome, described in Nature1 on 12 August, that helps to explain how a mere mollusc evolved into an otherworldly being. Breaking up the indivisible to observe the implausible—particles with a fractional charge. It was 1909 when Robert Millikan and Harvey Fletcher carried out their famous oil drop experiment in which they determined that the smallest unit of charge possible was 1.592x10-19 Coulombs, a value we now refer to as e, the fundamental charge (the modern accepted value is 1.602176565(35)x10-19 C).
It is the magnitude of the negative charge carried by the electron, as well as the positive charge of a proton. It is also the smallest unit of charge that any stable, independent particle can possibly have—no particles can have -3/4e charge, nor can they carry +2.8e of charge—barring technicalities. A paper published in this week's edition of Science examines in detail one of the technical loopholes to the preceding statement.
We have spent a large amount of time breaking up hadrons to our heart's content, resulting in a spew of quarks, bosons, and other fundamental particles. But there may be a way to split up something that looks a lot like an electron. Torsion field. Sounds of Space: New 'Chorus' Recording By RBSP's EMFISIS Instrument. Audio (wav or mp3) of the phenomenon known as "chorus" radio waves within Earth’s magnetosphere that are audible to the human ear, as recorded on Sept. 5, 2012, by RBSP’s Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS).
Insects. THE BIGGEST LITTLE ANTENNA IN THE WORLD - US Navy’s VLF antenna at Cutler Maine. VLF Transmitter Cutler. Closeup of a few of the antenna towers of the Cutler VLF Transmitter.
The Cutler VLF transmitter antenna masts as seen from across the Little Machias Bay at a distance of about 2 miles. The VLF Transmitter Cutler is the United States Navy's very low frequency (VLF) shore radio station at Cutler, Maine. The station provides one-way communication to submarines in the Navy's Atlantic Fleet, both on the surface and submerged. It transmits with call sign NAA, at a frequency of 24 kHz and input power of up to 1.8 megawatts, and is one of the most powerful radio transmitters in the world. It was originally located in Arlington Virginia. Started Arlington Virginia
Autopoiesis. 3D representation of a living cell during the process of mitosis, example of an autopoietic system.
The original definition can be found in Autopoiesis and Cognition: the Realization of the Living (1st edition 1973, 2nd 1980): Page 78: - An autopoietic machine is a machine organized (defined as a unity) as a network of processes of production (transformation and destruction) of components which: (i) through their interactions and transformations continuously regenerate and realize the network of processes (relations) that produced them; and (ii) constitute it (the machine) as a concrete unity in space in which they (the components) exist by specifying the topological domain of its realization as such a network.  Page 89:- [...] the space defined by an autopoietic system is self-contained and cannot be described by using dimensions that define another space. Principles of Quantum field theory. Bi-directionality in the Cognitive Sciences: Avenues, Challenges, and ... Ibis. The ibises (collective plural ibis; classical plurals ibides and ibes) are a group of long-legged wading birds in the family Threskiornithidae.
They all have long, down-curved bills, and usually feed as a group, probing mud for food items, usually crustaceans. Most species nest in trees, often with spoonbills or herons. The word ibis comes from Latin ibis from Greek ἴβις ibis from Egyptian hb, hīb.
Self-reference. Self-reference is studied and has applications in mathematics, philosophy, computer programming, and linguistics. Self-referential statements are sometimes paradoxical. Richard Feynman. Buckminster Fuller. Richard Buckminster "Bucky" Fuller (/ˈfʊlər/; July 12, 1895 – July 1, 1983) was an American architect, systems theorist, author, designer, inventor, and futurist. Buckminster Fuller was the second president of Mensa from 1974 to 1983. Biography Years later, he decided that this sort of experience had provided him with not only an interest in design, but also a habit of being familiar with and knowledgeable about the materials that his later projects would require. Fuller earned a machinist's certification, and knew how to use the press brake, stretch press, and other tools and equipment used in the sheet metal trade.
Physiological/Human biological. Books to look into.