It was not until the late 18th century that the first recorded observation that recognized Uranus as being a planet took place. This occurred on March 13th, 1781, when British astronomer Sir William Herschel observed the planet using a telescope of his own creation. During the 2nd century BCE, Hipparchos the Greek astronomer, mathematician and founder of trigonometry apparently recorded the planet as a star in his star catalogue (completed in 129 BCE)..
1.)If you are a member of this special group who joined the military from 2006 to late 2017, Kim says the best way to decide which option to pick is to consider how long you plan to stay in the military. If you are staying less than 20 years, you’d be well served to opt for the blended plan. Otherwise, you may find yourself walking away from service with no retirement benefits..
Ben Hur was one of the most honoured, award winning films of all time. It was nominated for twelve Academy Awards: Best Picture, Best Actor (Charlton Heston his sole career Oscar), Best Supporting Actor (Hugh Griffith), Best Director (William Wyler), Best Colour Cinematography, Best Colour Art Direction/Set Decoration, Best Sound, Best Score, Best Film Editing, Best Colour Costume Design, Best Special Effects, and Best Screenplay. It was the first film to win eleven Oscars it lost only in the Screenplay category.
Synchronverters have gained interest due to their capability of emulating synchronous machines (SMs), offering self synchronization to the grid. Despite the simplicity of the control structure, the adoption of an LCL filter makes the overall model complex again, posing questions regarding the tuning of the synchronverter and its robustness. The multi inputs multi outputs (MIMO) formulation of the problem requires multivariable analysis.
This study investigates the effect of water pressure on hydrocarbon generation and source rock maturation at high maturities for a perhydrous Tertiary Arctic coal, Svalbard. Using a 25 ml Hastalloy vessel, the coal was pyrolysed under low water pressure (230 “300 bar) and high water pressure (500, 700 and 900 bar) conditions between 380 C and 420 C for 24 h. At 380 C and 420 C, gas yields were not affected by pressure up to 700 bar, but were reduced slightly at 900 bar.
Here at the Seismo Lab, it our responsibility to verify that all of the info we putting out about earthquakes the locations and magnitudes, for example are correct. We responsible for getting info about the origin out within two minutes of the shaking, so we have fully automated systems that send updates to the National Earthquake Information Center right away. All of that happens without anyone touching anything, before we can even get to our desks.