High-Energy Electron Refraction Intensity Oscillations Reflection high-energy electron refraction (RHEED) has been used as a surface probe for in situ observation of monolayer growth using molecular beam epitaxy (MBE) because of its high surface sensitivity and a near grazing incidence. It utilizes diffraction of electrons by surface atoms[1] and the RHEED intensity oscillation can convey morphological information of the growth surface if the intensity oscillation pattern is properly interpreted[2]. The wave properties of electrons make techniques like RHEED feasible. Low-energy electron diffraction (LEED) has also been used to determine the surface structure as well. But RHEED is more preferable to LEED because of its forward…
In the article, The Role of Definition, the author discusses how a mere definition can affect the way a student will interpret information. A definition can contain concepts that are difficult to understand and will hamper a student’s ability to learn. As math in the classroom progresses, The National Council of Teachers of Mathematics recommends that the students create their own definitions of for mathematical terminology with the modification from a teacher. This is done to get the student to…
“Geometries in Cold Welded Steel.” This artwork was presented by the artist Tom Duchscher. Duchscher has been teaching design, sculpture, and ceramics at MJC for the past 40 years. His work has been exhibited throughout northern California and pacific northwest. For the past four decades Duchscher has dealt with the exploration of geometric forms and has focused on the element of line. This has allowed him to create illusionary and actual phenomenon. The use of linear parallel in his artwork has…
This can be seen when the different races speak straight into the camera about they hate other races. It can also be seen when Lee himself looks into the camera and says, “You’re all racists”. Lee also uses different lighting to expose the extreme heat that the characters are faced with. Overall, Lee produced his film by exploiting pre and post classical Hollywood cinema techniques by using music and facing the camera on the characters in different angles and using close up shots. Having…
circle. So to find the Treasure we will use “C”. Vanessa will use her compass to find north from Castle Rock. From there she will walk “X” paces in a straight line northward. At the end of her distance she will call this point “B”. Vanessa will now turn 90 degrees to the right and will walk 2x+4 paces east until she is at point “C”. We have now acquired a line segment which we will call AB which is basically the line from A to B, the line segment from B to C is considered BC. However, the lines…
statement: For any acute angle α, we draw a right triangle that includes α. The sine of α, abbreviated sin α, is the ratio of the length of the opposite this angle to the length of the hypotenuse of the triangle. If we simplify we get a formula which says: It is shown in a diagram below. We can see immediately that this definition has a weak point. It does not tell us exactly which right triangle to draw. There are many right triangles, large ones and small ones that include a given angle α.…
somebody assist you with moving a client to avoid their skin dragging across the sheets. We can also place a small pillow under their knees to avoid their bottom from sliding as well. Fowler’s Positions are semi to upright sitting positions in bed. The positions are used to relax tense abdominal muscles and help with improving a person’s breathing. Low Fowler’s position is when we raise the person’s head of the bed to an angle of 15 to 30 degrees. The person’s head and shoulder can also be…
In this scene, the couple had a ‘turn taking’ eye contact. Hall (1966) states “There is noticeable feedback from the muscles that control [their] eyes” (p. 119). This feedback helps the couple to know when to speak so that a smooth transition can take place between their voices in the disagreement. There is a point in the interaction where the couple had their eyes fixed on each other. This means that the couple is paying particular attention to the muscles around each other’s eyeballs; they are…
what they see in quilt patterns, and how they understand the properties of shape. They will discuss how the different shapes are used as symbolism in quilt patterns (p. 319). This part of the activity applies to Van Hiele’s level 1 which is the Visual Level because the children have to identify what shapes were used in the Ozella quilt. For example, “the students should be able to know that four squares are together to make crossroads or that squares and right triangle was used to a Bear’s…
drive and pull out a few feet if this happens. Now your car is at an angle, so let the car reverse in a staright line. You should be looking over your right shoulder. You can have one hand on the 12 mark of the steering wheel and the other hand on the passenger seat. Turn the wheel quickly to the left with two hands. If you don’t turn the wheel all the way to the left, you might end up getting to close to the curb or hitting it. You can check this by looking at your side-view mirror, if it looks…