Методы и шаги из использование чтение микроскоп
1. Place the instrument on the measured object, so that the measured part of the measured object is illuminated by natural light or light, and then adjust the eyecum screw, so that the the reticle and the object image can be seen clearly in the field of view at the same time;
2. Когда измерение, во-первых поворот чтение барабан к перемещение стекло сетка гравировка с филаменты, and at the same time slightly rotate the reading микроскоп to align the vertical филаменты с the измерение деталь для измерение;
3. An enlarged round hole dent is seen in the field of view. When measuring, first rotate the reading drum to make the vertical filament in the field of view tangent to one side of the round hole dent to get a reading, and then rotate the reading drum to make the vertical filament tangent to the other side of the round hole dent to get another reading;
4. If the диаметр of round отверстие вмятина is the difference of secondary reading, it is the изоляция толщина.
1. Когда the instrument can be used normally, it must not be disassembled by myself, иначе it will cripple the original accuracy of the instrument;
2. Когда the instrument is stored and used, dust, влажность, переохлаждение и перегрев, и пар содержащий кислота и щелочь должен быть избегать;
3. If there is dirt on the lens surface, it must be wiped with soft objects, such as absorbent cotton, soft brush and lens paper. When it comes to oily dirt, you can gently wipe it with absorbent cotton dipped in a little mixture of alcohol and ether.
Три примеры:
1. Place the micrometer microscope on the surface of the measured object, with the notch of the lens seat facing the direction of light. Press and hold the lens seat (8) to adjust the eyepiece (2) so that the dividing line in the visual field can be clearly adjusted. Turn the lens seat focusing ring (7) to make the measured object magnified by the objective lens and clearly imaged on the eyepiece dividing ruler (3). Loosen and lock the lens seat (1), then lock the measured object again, and turn the micrometer drum. At the boundary of the area to be measured, read the integer value on the fixed ruler plus the tail value on the micrometer drum as the starting point reading (a), then rotate the micrometer drum to aim at the other end boundary of the area to be measured on the reticle with cross and double score lines, read the integer value on the fixed ruler plus the tail value on the micrometer drum as the end reading (b) of the boundary of the object to be measured, and the difference between the two readings (a-b
2 Измерение Ньютон'с Кольцо с Чтение Микроскоп
Измерение радиус из кривизна объектив с Ньютон'с кольцо.
Put the convex surface of a plano-convex lens with a large radius of curveture on a flat glass plate, and keep point contact. At this time, if the air layer is illuminated by vertical monochromatic light, there will be interference on the upper and lower surfaces of the air layer layer outside the contact point, and it is a light and dark halo centered on the contact point, which is called Ньютон круг в физика. Потому что толщина воздух слой в светлый (или темный) круг есть равно, это есть называемый равный толщина интерференция.
Применение из равно толщина интерференция эксперимент
1. Измерение радиус из кривизна из линза с Ньютон'с кольцо.
Put the convex surface of a plano-convex lens with a large radius of curveture on a flat glass plate, and keep point contact. At this time, if the air layer is illuminated by vertical monochromatic light, there will be interference on the upper and lower surfaces of the air layer layer outside the contact point, and it is a light and dark halo centered on the contact point, which is called Ньютон круг в физика. Потому что толщина воздух слой в светлый (или темный) круг есть равно, это есть называемый равный толщина интерференция.
Согласно к теория из равно толщина интерференция, it can be inferred that
Где: R is the radius of curvature of convex lens, λ is the wavelength of monochromatic light.
Dm,Dn—— the diameters of the m and n turns, measured by a reading микроскоп.
In the experiment: generally|m-n| Greater than or equal to 5, and select 5~10 groups of different combinations of Dm and Dn, so as to eliminate the system error.
