Louis Renault et André Citroen - Histoire Immédiate - France3 Las otras caras de la “Marcha del progreso”; la evolución vista desde 99 diferentes perspectivas Las parodias están a la orden del día en nuestros días, la evolución no podía quedar al margen de estos guiños. “99 Steps of Progress” es un proyecto de parodias ilustradas, creadas por el colectivo de artistas parisinos conocidos como Maentis. Este grupo de franceses decidieron darle un giro a la afamada ilustración conocida precisamente como “La marcha del progreso” en la que, a manera de infografía se muestra la evolución del hombre desde sus incios hasta la aparición del Homo Sapiens. La “Marcha del progreso” es una de las más famosas e identificables ilustraciones científicas. en ella se condensan alrededor de 25 millones de años de evolución humana. sin embargo en esta versión alternativa, se tocan otros temas además de los meros cambios biologicos que nuestra especie ha sufrido a lo largo de las eras.
Why the world is running out of helium - Science - News Scientists have warned that the world's most commonly used inert gas is being depleted at an astonishing rate because of a law passed in the United States in 1996 which has effectively made helium too cheap to recycle. The law stipulates that the US National Helium Reserve, which is kept in a disused underground gas field near Amarillo, Texas – by far the biggest store of helium in the world – must all be sold off by 2015, irrespective of the market price. The experts warn that the world could run out of helium within 25 to 30 years, potentially spelling disaster for hospitals, whose MRI scanners are cooled by the gas in liquid form, and anti-terrorist authorities who rely on helium for their radiation monitors, as well as the millions of children who love to watch their helium-filled balloons float into the sky. Liquid helium is critical for cooling cooling infrared detectors, nuclear reactors and the machinery of wind tunnels. What helium is used for *Airships *MRI scanners *Rockets *Dating
World Population Clock: 7 Billion People (2013) - Worldometers World Population: Past, Present, and Future (move and expand the bar at the bottom of the chart to navigate through time) The chart above illustrates how world population has changed throughout history. View the full tabulated data. At the dawn of agriculture, about 8000 B.C., the population of the world was approximately 5 million. Over the 8,000-year period up to 1 A.D. it grew to 200 million (some estimate 300 million or even 600, suggesting how imprecise population estimates of early historical periods can be), with a growth rate of under 0.05% per year. A tremendous change occurred with the industrial revolution: whereas it had taken all of human history until around 1800 for world population to reach one billion, the second billion was achieved in only 130 years (1930), the third billion in 30 years (1960), the fourth billion in 15 years (1974), and the fifth billion in only 13 years (1987). Wonder how big was the world's population when you were born? Growth Rate 10 Billion (2055)
YouTube L'histoire du monde Les révolution ATOMIUM 2013 INSPIRATION: SKETCHING (3/3)One of my favorite step of the creative process is to doodle for hours to understand the structure, shape and space I’m working with. In this case I drew the low poly planet several times using the stippling technique.This drawing was shown at an exhibition at Muriel Guépin gallery in NYC last April, and also Art Basel in June 2013, and the piece is available through the gallery. joanielemercier: New drawing: Stippling.Exhibition opens in 2 days. INSPIRATION: SKETCHING (2/3)One of my favorite step of the creative process is to doodle for hours to understand the structure, shape and space I’m working with. In this case I drew the low poly planet several times using the stippling technique. joanielemercier: Shading experiments using only dots. INSPIRATION: SKETCHING (1/3)One of my favorite step of the creative process is to doodle for hours to understand the structure, shape and space I’m working with. FULL MOON.
Things I Won't Work With: Dioxygen Difluoride The heater was warmed to approximately 700C. The heater block glowed a dull red color, observable with room lights turned off. The ballast tank was filled to 300 torr with oxygen, and fluorine was added until the total pressure was 901 torr. . . And yes, what happens next is just what you think happens: you run a mixture of oxygen and fluorine through a 700-degree-heating block. Well, "often" is sort of a relative term. And a hard core it is! FOOF is only stable at low temperatures; you'll never get close to RT with the stuff without it tearing itself to pieces. "Being a high energy oxidizer, dioxygen difluoride reacted vigorously with organic compounds, even at temperatures close to its melting point. And he's just getting warmed up, if that's the right phrase to use for something that detonates things at -180C (that's -300 Fahrenheit, if you only have a kitchen thermometer). Even Streng had to give up on some of the planned experiments, though (bonus dormitat Strengus?).
signification des couleurs - Page 3 Signification de la couleur des pays du monde. (M) Alphabétisation par M. Le drapeau de la Macédoine : est composé d'un soleil jaune à 8 rayons sur un ciel rouge. Il a été adopté le 5 octobre 1995. Le drapeau de Madagascar :est ledrapeau national et le pavillon national de la République de Madagascar. Le drapeau de la Malaisie :est le drapeau civil, le drapeau d'État et pavillon d'État de la Malaisie. Le drapeau du Malawi :Adopté le29 juillet 2010 suite à la proposition faite par le Parti démocrate-progressiste au gouvernement malawite. Le drapeau des Maldives :est le drapeau national et le pavillon national de la République des Maldives. Le drapeau du Mali : Adopté le 1er mars 1961, composé de 3 bandes verticales et égales de couleur verte, or et rouge. Le drapeau de Malte :Est officiellement adopté en même temps que la constitution maltaise le 21 septembre 1964, jour de l'indépendance. Le drapeau du Maroc :est l’emblème du Royaume du Maroc. Alphabétisation par N. Alphabétisation par O.
MOTORSPORT NOVA ROADRAGE L'histoire du monde - Les premiers empires [Part 1]