0_Wizard
Red is my favorite color.  It is known for being at the end of the visible spectrum of light.
Red is the colour at the end of the visible spectrum of light, next to orange and opposite violet.
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Purple
Purple is a color intermediate between blue and red. It is similar to violet, but unlike violet, which is a spectral color with its own wavelength on the visible spectrum of light, purple is a composite color made by combining red and blue. According to surveys in Europe and the U.S., purple is the color most often associated with royalty, magic, mystery and piety. When combined with pink, it is associated with eroticism, femininity and seduction. Purple was the color worn by Roman magistrates; it became the imperial color worn by the rulers of the Byzantine Empire and the Holy Roman Empire, and later by Roman Catholic bishops.
Brown
Brown is a composite color. In the CMYK color model used in printing or painting, brown is made by combining red, black, and yellow, or red, yellow, and blue. In the RGB color model used to project colors onto television screens and computer monitors, brown is made by combining red and green, in specific proportions. The brown color is seen widely in nature, in wood, soil, human hair color, eye color and skin pigmentation. Brown is the color of dark wood or rich soil. According to public opinion surveys in Europe and the United States, brown is the least favorite color of the public; the color is most often associated with plainness, the rustic, feces, and poverty.
Color psychology
Color psychology is the study of hues as a determinant of human behavior. Color influences perceptions that are not obvious, such as the taste of food. Colours can also enhance the effectiveness of placebos. For example, red or orange pills are generally used as stimulants. Colour can indeed influence a person; however, it is important to remember that these effects differ between people. Factors such as gender, age, and culture can influence how an individual perceives color. For instance, heterosexual men tend to report that red outfits enhance female attractiveness, while heterosexual females deny any outfit color impacting that of men.
Pink
Pink is a pale red color that is named after a flower of the same name. It was first used as a color name in the late 17th century. According to surveys in Europe and the United States, pink is the color most often associated with charm, politeness, sensitivity, tenderness, sweetness, childhood, femininity and the romantic. It is associated with chastity and innocence when combined with white, but associated with eroticism and seduction when combined with purple or black. The color pink is named after the flowers, pinks, flowering plants in the genus "Dianthus," and derives from the frilled edge of the flowers.
Visible spectrum
The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light. A typical human eye will respond to wavelengths from about 390 to 700 nm. In terms of frequency, this corresponds to a band in the vicinity of 430–770 THz. The spectrum does not, however, contain all the colors that the human eyes and brain can distinguish. Unsaturated colors such as pink, or purple variations such as magenta, are absent, for example, because they can be made only by a mix of multiple wavelengths.
Color vision
Color vision is the ability of an organism or machine to distinguish objects based on the wavelengths (or frequencies) of the light they reflect, emit, or transmit. Colors can be measured and quantified in various ways; indeed, a person's perception of colors is a subjective process whereby the brain responds to the stimuli that are produced when incoming light reacts with the several types of cone cells in the eye. In essence, different people see the same illuminated object or light source in different ways. Isaac Newton discovered that white light, after being split into its component colours when passed through a dispersive prism, could, by passing them through a different prism, be recombined to make white light.
Metamaterial cloaking
Metamaterial cloaking is the usage of metamaterials in an invisibility cloak. This is accomplished by manipulating the paths traversed by light through a novel optical material. Metamaterials direct and control the propagation and transmission of specified parts of the light spectrum and demonstrate the potential to render an object seemingly invisible. Metamaterial cloaking, based on transformation optics, describes the process of shielding something from view by controlling electromagnetic radiation. Objects in the defined location are still present, but incident waves are guided around them without being affected by the object itself.
1_Apprentice
Isn't the color red supposed to excite and inflame the passions?
0_Wizard
Yes that is true.  I've also heard it increases blood pressure!
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Hypertension
Hypertension (HTN or HT), also known as high blood pressure (HBP), is a long-term medical condition in which the blood pressure in the arteries is persistently elevated. High blood pressure usually does not cause symptoms. Long-term high blood pressure, however, is a major risk factor for coronary artery disease, stroke, heart failure, atrial fibrillation, peripheral vascular disease, vision loss, chronic kidney disease, and dementia. High blood pressure is classified as either primary (essential) high blood pressure or secondary high blood pressure. About 90–95% of cases are primary, defined as high blood pressure due to nonspecific lifestyle and genetic factors.
Cardiovascular disease
Cardiovascular disease (CVD) is a class of diseases that involve the heart or blood vessels. Cardiovascular disease includes coronary artery diseases (CAD) such as angina and myocardial infarction (commonly known as a heart attack). Other CVDs include stroke, heart failure, hypertensive heart disease, rheumatic heart disease, cardiomyopathy, heart arrhythmia, congenital heart disease, valvular heart disease, carditis, aortic aneurysms, peripheral artery disease, thromboembolic disease, and venous thrombosis. The underlying mechanisms vary depending on the disease in question. Coronary artery disease, stroke, and peripheral artery disease involve atherosclerosis.
Blood pressure
Blood pressure (BP) is the pressure of circulating blood on the walls of blood vessels. Used without further specification, "blood pressure" usually refers to the pressure in large arteries of the systemic circulation. Blood pressure is usually expressed in terms of the systolic pressure (maximum during one heart beat) over diastolic pressure (minimum in between two heart beats) and is measured in millimeters of mercury (mmHg), above the surrounding atmospheric pressure (considered to be zero for convenience). It is one of the vital signs, along with respiratory rate, heart rate, oxygen saturation, and body temperature.
California v. Murray
The trial of Conrad Murray (People of the State of California v. Conrad Robert Murray) was the American criminal trial of Michael Jackson's personal physician, Conrad Murray, who was charged with involuntary manslaughter for the pop singer's death on June 25, 2009, from a massive overdose of the general anesthetic propofol. The trial, which started on September 27, 2011, was held in the Los Angeles County Superior Court in Los Angeles, California, before Judge Michael Pastor and it was televised. The prosecutors in the case (David Walgren and Deborah Brazil, both Los Angeles deputy district attorneys), in their opening statement, told jurors: "misplaced trust in the hands of Murray cost Jackson his life".
Blood pressure measurement
Arterial pressure is most commonly measured via a sphygmomanometer, which historically used the height of a column of mercury to reflect the circulating pressure. Blood pressure values are generally reported in millimetres of mercury (mmHg), though aneroid and electronic devices do not contain mercury. For each heartbeat, blood pressure varies between systolic and diastolic pressures. Systolic pressure is peak pressure in the arteries, which occurs near the end of the cardiac cycle when the ventricles are contracting. Diastolic pressure is minimum pressure in the arteries, which occurs near the beginning of the cardiac cycle when the ventricles are filled with blood.
Pathophysiology of hypertension
Pathophysiology is a branch of medicine which explains the function of the body as it relates to diseases and conditions. The pathophysiology of hypertension is an area which attempts to explain mechanistically the causes of hypertension, which is a chronic disease characterized by elevation of blood pressure. Hypertension can be classified by cause as either essential (also known as primary or idiopathic) or secondary. About 90–95% of hypertension is essential hypertension. Some authorities define essential hypertension as that which has no known explanation, while others define its cause as being due to overconsumption of sodium and underconsumption of potassium.
Hemodynamics
Hemodynamics or hæmodynamics is the dynamics of blood flow. The circulatory system is controlled by homeostatic mechanisms, much as hydraulic circuits are controlled by control systems. Hemodynamic response continuously monitors and adjusts to conditions in the body and its environment. Thus hemodynamics explains the physical laws that govern the flow of blood in the blood vessels. Blood flow ensures the transportation of nutrients, hormones, metabolic wastes, O and CO throughout the body to maintain cell-level metabolism, the regulation of the pH, osmotic pressure and temperature of the whole body, and the protection from microbial and mechanical harms.
1_Apprentice
I understand it is not to be used, or used sparingly in classrooms.
0_Wizard
I have never heard that?  Where did you read that?
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Fate of the unlearned
The fate of the unlearned, also known as the destiny of the unevangelized, is an eschatological question about the ultimate destiny of people who have not been exposed to a particular theology or doctrine and thus have no opportunity to embrace it. The question is whether those who never hear of requirements issued through divine revelations will be punished for failure to abide by those requirements. It is sometimes addressed in combination with the similar question of the fate of the unbeliever. Differing faith traditions have different responses to the question; in Christianity the fate of the unlearned is related to the question of original sin.
This Is It (Michael Jackson song)
"This Is It" is a song co-written by American pop star and musician Michael Jackson and Canadian singer-songwriter Paul Anka. The song was recorded by the former and featured as a track on the album, "This Is It" (2009), which accompanies the 2009 concert documentary "Michael Jackson's This Is It". It was premiered worldwide on Jackson's official website on October 12, 2009 four months after his death on June 25, 2009. Although Sony Music Entertainment referred to the song as a "new single" during its promotion, it was later confirmed that the song would only be sent for airplay, and not be available to buy as a single release.
Frank Sinatra
Francis Albert Sinatra (; December 12, 1915 – May 14, 1998) was an American singer, actor, and producer who was one of the most popular and influential musical artists of the 20th century. He is one of the best-selling music artists of all time, having sold more than 150million records worldwide. Born in Hoboken, New Jersey, to Italian immigrants, Sinatra began his musical career in the swing era with bandleaders Harry James and Tommy Dorsey. Sinatra found success as a solo artist after he signed with Columbia Records in 1943, becoming the idol of the "bobby soxers". He released his debut album, "The Voice of Frank Sinatra", in 1946.
The Spirit of the Age
The Spirit of the Age (full title "The Spirit of the Age: Or, Contemporary Portraits") is a collection of character sketches by the early 19th century English essayist, literary critic, and social commentator William Hazlitt, portraying 25 men, mostly British, whom he believed to represent significant trends in the thought, literature, and politics of his time. The subjects include thinkers, social reformers, politicians, poets, essayists, and novelists, many of whom Hazlitt was personally acquainted with or had encountered. Originally appearing in English periodicals, mostly "The New Monthly Magazine" in 1824, the essays were collected with several others written for the purpose and published in book form in 1825.
Death of Rigoberto Alpizar
Rigoberto Alpizar (April 17, 1961 – December 7, 2005) was a Costa Rican-born United States citizen who was fatally shot at Miami International Airport by two United States Federal Air Marshals. Alpizar lived in the central Florida town of Maitland and worked in the Paint Department of a Home Depot. He was supposed to fly with his wife, Anne Buechner, to Orlando, Florida, returning from a missionary trip to Quito, Ecuador. The shooting took place on a jetway. Alpizar ran away from the aircraft and, Homeland Security officials maintain, claimed to have a bomb in his bag and then made a sudden movement toward it.
Wilhelm Furtwängler
Wilhelm Furtwängler (January 25, 1886November 30, 1954) was a German conductor and composer. He is widely regarded as one of the greatest symphonic and operatic conductors of the 20th century. Furtwängler was principal conductor of the Berlin Philharmonic between 1922 and 1945, and from 1952 until 1954. He was also principal conductor of the Gewandhaus Orchestra (1922–26), and was a guest conductor of other major orchestras including the Vienna Philharmonic. He was the leading conductor to remain in Germany during the Second World War, although he was not an adherent of the Nazi regime. This decision caused lasting controversy, and the extent to which his presence lent prestige to the Third Reich is still debated.
Dominici affair
The Dominici affair was the criminal investigation into the triple murder of three Britons in France. During the night of 4/5 August 1952, Sir Jack Drummond, a 61-year-old scientist; his 44-year-old wife Anne Wilbraham; and their 10-year-old daughter Elizabeth were murdered next to their car which was parked in a lay-by near "La Grand'Terre", the farm belonging to the Dominici family, located near the village of Lurs in the département of Basses-Alpes (now Alpes-de-Haute-Provence). Family patriarch Gaston Dominici was convicted of the three murders in 1957 and sentenced to death, though it was widely believed that his guilt had not been clearly established.
1_Apprentice
Teacher school!
0_Wizard
Interesting fact, Iron oxide is what gives Mars the red color.
Iron oxide also gives the red color to the planet Mars.
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Red
Red is the colour at the end of the visible spectrum of light, next to orange and opposite violet. It has a dominant wavelength of approximately 625–740 nanometres. It is a primary color in the RGB color model and the CMYK color model, and is the complementary color of cyan. Reds range from the brilliant yellow-tinged scarlet and vermillion to bluish-red crimson, and vary in shade from the pale red pink to the dark red burgundy. The red sky at sunset results from Rayleigh scattering, while the red color of the Grand Canyon and other geological features is caused by hematite or red ochre, both forms of iron oxide.
Iron
Iron is a chemical element with symbol Fe (from ) and atomic number 26. It is a metal in the first transition series. It is by mass the most common element on Earth, forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust. Its abundance in rocky planets like Earth is due to its abundant production by fusion in high-mass stars, where it is the last element to be produced with release of energy before the violent collapse of a supernova, which scatters the iron into space. Like the other group 8 elements, ruthenium and osmium, iron exists in a wide range of oxidation states, −2 to +7, although +2 and +3 are the most common.
Mars
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury. In English, Mars carries a name of the Roman god of war, and is often referred to as the "Red Planet" because the reddish iron oxide prevalent on its surface gives it a reddish appearance that is distinctive among the astronomical bodies visible to the naked eye. Mars is a terrestrial planet with a thin atmosphere, having surface features reminiscent both of the impact craters of the Moon and the valleys, deserts, and polar ice caps of Earth. The rotational period and seasonal cycles of Mars are likewise similar to those of Earth, as is the tilt that produces the seasons.
Iron oxide nanoparticle
Iron oxide nanoparticles are iron oxide particles with diameters between about 1 and 100 nanometers. The two main forms are magnetite () and its oxidized form maghemite (γ-). They have attracted extensive interest due to their superparamagnetic properties and their potential applications in many fields (although and are also highly magnetic materials, they are toxic and easily oxidized). Applications of iron oxide nanoparticles include terabit magnetic storage devices, catalysis, sensors, Superparamagnetic Relaxometry (SPMR), and high-sensitivity biomolecular magnetic resonance imaging (MRI) for medical diagnosis and therapeutics.
Glass-to-metal seal
Glass-to-metal seals are a very important element of the construction of vacuum tubes, electric discharge tubes, incandescent light bulbs, glass encapsulated semiconductor diodes, reed switches, pressure tight glass windows in metal cases, and metal or ceramic packages of electronic components. Properly done, such a seal is hermetic (vacuum tight, good electrical insulation, special optical properties e.g. UV lamps). To achieve such a seal, two properties must hold:  Thinking for example about a metal wire in a glass bulb sealing, the metal glass contact can break if the CTEs (coefficient of thermal expansion) are not well aligned.
Modern Mars habitability
One of the central questions of modern Astrobiology is whether there is, or ever has been life on Mars. Mars probably had oceans in the past, and it definitely had lakes and a thicker atmosphere. Modern Mars has become cold, dry, and almost uninhabitable, yet, if life did ever arise on Mars, some hardy microbes and perhaps even multicellular life might survive there right through to the present. The only missions to search for life on Mars, the two Viking missions, returned results that were inconclusive . However the instruments were not designed to cope with the unusual conditions which Viking discovered on Mars, which may have confused the results of the experiments.
Sienna
Sienna (from , "Siena earth") is an earth pigment containing iron oxide and manganese oxide. In its natural state, it is yellow-brown and is called raw sienna. When heated, it becomes a reddish brown and is called burnt sienna. It takes its name from the city-state of Siena, where it was produced during the Renaissance. Along with ochre and umber, it was one of the first pigments to be used by humans, and is found in many cave paintings. Since the Renaissance, it has been one of the brown pigments most widely used by artists. The first recorded use of "sienna" as a colour name in English was in 1760.
1_Apprentice
I wonder if Mars is a potential mining source for iron in the future?
0_Wizard
Maybe Elon Musk will be the first to try it!
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Elon Musk
Elon Reeve Musk (; born June 28, 1971) is a South African-American business magnate, investor, engineer, and inventor. He is the founder, CEO, and lead designer of SpaceX; co-founder, CEO, and product architect of Tesla Inc.; co-chairman of OpenAI; founder and CEO of Neuralink, and founder of The Boring Company. He is also a co-founder and former chairman of SolarCity, co-founder of Zip2, and founder of X.com, which merged with Confinity and took the name PayPal. In December 2016, Musk was ranked 21st on the "Forbes" list of The World's Most Powerful People. , Musk has a net worth of $20.9 billion, and is listed by "Forbes" as the 53rd richest person in the world.
SpaceX
Space Exploration Technologies Corp., doing business as SpaceX, is a private American aerospace manufacturer and space transport services company headquartered in Hawthorne, California. It was founded in 2002 by entrepreneur Elon Musk with the goal of reducing space transportation costs and enabling the colonization of Mars. SpaceX has since developed the Falcon launch vehicle family and the Dragon spacecraft family, which both currently deliver payloads into Earth orbit. SpaceX's achievements include the first privately funded liquid-propellant rocket to reach orbit (Falcon 1 in 2008); the first privately funded company to successfully launch, orbit, and recover a spacecraft (Dragon in 2010); the first private company to send a spacecraft to the International Space Station (Dragon in 2012); the first propulsive landing for an orbital rocket (Falcon 9 in 2015); and the first reuse of an orbital rocket (Falcon 9 in 2017).
Falcon Heavy
Falcon Heavy is a reusable super heavy-lift launch vehicle being designed and manufactured by SpaceX. The Falcon Heavy (previously known as the Falcon 9 Heavy) is a variant of the Falcon 9 launch vehicle and will consist of a strengthened Falcon 9 rocket core with two additional Falcon 9 first stages as strap-on boosters. This will increase the low Earth orbit (LEO) maximum payload to , compared to for a Falcon 9 full thrust. The Falcon Heavy will only be able to deliver this mass when it is fully expended; the maximum mass to geostationary transfer orbit (GTO) with first stage and side booster recovery is 8,000 kilograms (17,637 lb), compared to for a recoverable Falcon 9.
Tesla, Inc.
Tesla, Inc. (formerly Tesla Motors) is an American company that specializes in electric automotives, energy storage and solar panel manufacturing based in Palo Alto, California. Founded in 2003, the company specializes in electric cars, lithium-ion battery energy storage, and residential photovoltaic panels (through the subsidiary company SolarCity). The additional products Tesla sells include the Tesla Powerwall and Powerpack batteries, solar panels and solar roof tiles. CEO Elon Musk said that he envisions Tesla as a technology company and independent automaker, aimed at eventually offering electric cars at prices affordable to the average consumer.
SpaceX reusable launch system development program
The SpaceX reusable launch system development program is a privately funded program to develop a set of new technologies for an orbital launch system that may be reused many times in a manner similar to the reusability of aircraft. The company SpaceX is developing the technologies over a number of years to facilitate full and rapid reusability of space launch vehicles. The project's long-term objectives include returning a launch vehicle first stage to the launch site in minutes and to return a second stage to the launch pad following orbital realignment with the launch site and atmospheric reentry in up to 24 hours.
SpaceX Mars transportation infrastructure
Elon Musk and SpaceX have proposed to develop a Mars transportation infrastructure in order to facilitate the eventual colonization of Mars. The design includes fully reusable launch vehicles, human-rated spacecraft, on-orbit propellant tankers, rapid-turnaround launch/landing mounts, and local production of rocket fuel on Mars via in situ resource utilization (ISRU). SpaceX' aspirational goal is to put the first humans on Mars by 2024.  , the key element of the infrastructure is the BFR or "Big Falcon Rocket". It is a two-stage rocket where the upper stage is also used as spacecraft to reach Mars and to return to Earth.
The Musk Who Fell to Earth
"The Musk Who Fell to Earth" is the twelfth episode of the twenty-sixth season of the American animated sitcom "The Simpsons", and the 564th overall episode of the series. It first aired on the Fox network in the United States on January 25, 2015. Elon Musk lands with his Dragon spacecraft into the Simpsons' backyard. Whilst eating dinner with them, Marge asks why Musk is in Springfield. Elon responds by revealing that the purpose for his stay in Springfield is that he is looking for inspiration. To this, Homer invites him to tag along with him to the power plant. The next day, during the car ride to the power plant, Elon discovers that Homer is the source of new ideas for inventions, as his "Homerisms" (according to Lisa) quickly inspire him.