We rotated the ray table clockwise by increments of 10̊ again. We repeated the same measurements but instead with counterclockwise angles. From the two angles of refraction we were able to calculate the average angles of refraction. Finally, we aligned the flat side of the lens so that incoming light ray struck the cylindrical surface. We rotated the ray table until the refracted ray disappeared completely and only the reflected ray was visible.
As it hits the ground it lands on carbon paper that has been placed over another blank piece of A4 paper. The marble will then leave a clear mark on the blank piece of A4 paper. The marks distance from the edge of the table allows us to obtain a value for the horizontal distance traveled by the marble at a specific distance on the inclined plane. By obtaining these values for different distances on the inclined plane one can use different equations and calculations to investigate the type of movement or motion that occurs when one object has both horizontal motion and vertical motion. Hence the formula h= ½ gt^2 can be used in order to help obtain an accurate estimation of the tables height from the ground.
If the light ray hits the boundary at an angle which is not perpendicular to or parallel to the surface, then it will change direction and appear to `bend'. Refraction is nicely demonstrated when you look from above at an angle at a straw in a glass of water. The straw appears bent in the liquid. This is because the light rays leaving the straw change direction when they hit the surface between the liquid and the air. Your eyes trace the light rays backwards as straight lines to the point they would have come from if they had not changed direction and as a result you see the tip of the straw as being shallower in the liquid than it really is.
Dependent variable(s) Angle of refraction Measure the angle with a protractor. Controlled variable(s) The refractive index The position of the Perspex Trace it on a piece of paper, this is where it will be placed it it got moved. Same light source Same ray box Same protractor and unit Use the same protractor Same piece of Perspex Use only one Perspex prism Hypothesis: If a light is shone at the Perspex, then the light will be refracted because of the shape of the Perspex, and because it is pasting through a medium. If the angle of incidence and refraction was measured and calculated the refracted index would be about 1.49, since the refractive index of a substance is always the same. Equipment: - Ray box - Power supply - Wires - Perspex prism - Paper - Ruler and protractor - Single slit slide - Quadruplet slits slide - 2 colored slides Method: 1.
When the sun and moon are at a right angle, the pulls fight each other and cause a smaller difference between high and low tides called neap tides. Another type of motion is waves. Everything in the water causes waves, but the most common thing is wind. When wind passes over the surface of the water, friction causes it to ripple. The strength, distance, and length of the wind gusts determine how big the ripples become.
Then drew two intersecting lines perpendicular to each other. 2. Using the protractor I drew the angles of incidences or rays measuring 10°, 20°, 30°, 40°, 50° and 60°. 3. Then I drew a semi-circle on the top of the intersection representing the flexi glass and placed the flexi glass over the semi-circle.
However, have you ever wondered how the airplane works when it flying in the sky? An airplane by definition is a powered fixed-wing aircraft that is propelled forward by thrust from propeller or jet engine (Wikipedia). As the figure shows below, there are four main forces acting on the airplane, which are gravity, lift, thrust, and drag. [pic] Gravity Every object on the earth undergoes gravity, which is actually a force of acceleration. The gravity equals Mass times Acceleration, or G=ma.
An easy way to remember the quadratic equation formula is to sing the formula to the tune of song Pop Goes the Weasel. For example “x equals minus b, plus or minus the square root of, b-squared minus four a c, all over two a” (Math Fun, 2011, p. 1). Three methods used to solve quadratics are—graphing, factoring, and completing the square (Origins, Derivation, & Applications, 2012). Each formula has an appropriate time to be used depending on the quadratic question (Origins, Derivation, & Applications, 2012). This formula is a great advantage to the mathematical and science branches because it can be applied to all quadratics and has a 100-percent rate of yielding the correct solution (Origins, Derivation, & Applications, 2012).
Measurements in axial direction were carried out for different Mach numbers such as 0.4, 0.6 and 1. In radial direction, measurements were carried out for Mach number 0.4. Ellipse and square twinjets exhibit efficient mixing compared to other twinjets for all the Mach numbers. Keywords - centerline Mach number decay, mixing
After ejection, the WP-saturated felt wedges in the payload fall to the ground in an elliptical pattern. Each wedge then becomes a point or source of smoke. The M825 is ballistically similar to the M483A1 (DPICM) family of projectiles. Employment. Smoke is employed by using the quick smoke and immediate smoke techniques.