How did Red Giants get so big?
Space and AstronomyWhen the hydrogen in the centre of a star runs out, the star begins to use hydrogen further out from its core. This causes the outer layers of the star to expand and cool. Over time, the star grows to more than 400 times its original size. As the star cools, it changes colour and
What is CT pitch?
Space and AstronomyIn the spiral CT technique, the term pitch is known, which is the distance (speed) of the table for one x-ray rotation in gantry (l) compared to the number and width of the detector (nT). Pitch changes will affect the spatial resolution of the patient’s image and dose received. What does pitch mean in CT
How do you measure the diameter of a jar?
Space and AstronomyMeasure the Diameter Measure the bottom face of the bottle from one side to the other with a flat ruler. This is your bottle diameter. Multiply the diameter by pi (3.14), and the resulting number is your circumference. What is the diameter of a jar? Most Mason jars with regular mouths have an outer diameter
What is the difference between route pattern and translation pattern?
Space and AstronomyThe primary difference between route patterns and translation patterns is that translation patterns do not have a final path selection destination (route list, gateway, or trunk). Translation patterns exist only to manipulate digits; they do not perform call routing. What is Route pattern? A route pattern comprises a string of digits (an address) and a
How do you find the angle between two tangents?
Space and Astronomytan(α−θ)=tanα−tanθ1+tanαtanθ=−2√2−√21−2√2√2=√2. Hence the angle between the tangents at P is arctan√2≈0.955c≈54.7∘. It turns out that θ=α−θ and the triangle in the above diagram is isosceles. What is the formula to find angle between two tangents? 2 Answers. Show activity on this post. If m1 and m2 are the gradients of the two lines, the angle
How do you find the bounds of the shell method?
Space and AstronomyHow do you know when to use shell method? So if I have to find the volume of the solid generated by revolving the region bounded by x=0 , y=x2 , and y=−x+2 around the y -axis, I would use shells because there would only be one integral to evaluate. (Disks would require two: one
How do you calculate total magnification?
Space and AstronomyTotal Magnification: To figure the total magnification of an image that you are viewing through the microscope is really quite simple. To get the total magnification take the power of the objective (4X, 10X, 40x) and multiply by the power of the eyepiece, usually 10X. What is the formula for calculating total magnification? Multiply the
Who is the commander of the crew in the Martian?
Space and AstronomyMatt Damon as Mark Watney, a botanist who is part of the Ares III team. Jessica Chastain as Commander Melissa Lewis, geologist and the Ares III mission commander. Who is the Commander in The Martian? The Martian. In The Martian, Jessica Chastain plays Commander Lewis, in charge of the space mission that mistakenly believes that
What is a space group in crystallography?
Space and Astronomyspace group, in crystallography, any of the ways in which the orientation of a crystal can be changed without seeming to change the position of its atoms. What does the space group represent? In mathematics, physics and chemistry, a space group is the symmetry group of an object in space, usually in three dimensions. The
Who wrote Kennedy’s moon speech?
Space and AstronomyTed SorensenTed Sorensen, with changes by Kennedy. Who wrote the JFK moon speech? Goals/Rationale: Students will examine President Kennedy’s 1961 decision to send a man to the Moon by reading a letter written to the president by 13-year-old Mary Lou Reitler. Who were JFK speech writers? Theodore Chaikin Sorensen (May 8, 1928 – October 31,