the low- power objective lens almost touches the slide. 7. Looking through the eyepiece use the coarse adjustment knob to raise the body tube until the specimen comes into view. 8. Turning no more than ¼ of a turn, use the fine adjustment knob to focus the letter clearly. 9. In plate 1, draw a picture of the letter "d" as viewed through the microscope. Note the magnification. 10. While looking through the eyepiece, move the slide to the left. Notice which way the letter seems to move. Now move
Light Microscopes Introduction Nobody in the entire world is capable of seeing microscopic things with a naked eye. For years, this has been a huge problem against humanity; people have died of diseases that scientists could not deal with or know about because they lacked of having the correct technology. Back then in the 1400s, they were not aware of bacteria, as microscopes were not invented during those days. They could only see the effect that the bacteria created, but still could not find
study on the stage, the light passes through the eyepiece lens so that it is clearly visible to see. Most microscopes consist of twelve parts; the eyepiece lens, the tube, the arm, the base, the illuminator, the mirror, the stage, the turret, the objective lenses, the rack stop, the condenser lens and the iris. Every part of a microscope has a very important responsibility in order for people to see smaller things clearly. For example the eyepiece lens is what you look through to observe. An illuminator
Microscope are useful in viewing the letter “e” and the cheek cells. It shows a close visual image, which help to observe the two objects. Following the methods is important, because it provides the necessary materials and the steps of the procedure. It’s extremely important to wear a apron , goggles, and gloves. Also, be cautious in using the materials. The purpose is to observe and how to use the microscope under the specimen. For the results each figure image shows the differences between the
there are many different kind of telescope like Refractors, Reflectors, and Catadioptic. Also that there are many different terms that describes a telescope. Using the Simulator, we had to determine which inch of the Aperture, which milometer of the Eyepiece, and the focus Adjustments to get a better picture of the moon/Saturn/cluster. After we get the best picture, at the bottom left hand corner. It show the Light Gathering Power (LGP), Resolution, Magnification, and the field of view. Light Gathering
optical parts in the upper part of the microscope. The base supports the microscope and houses the illuminator while the arm is used to carry the microscope since it is connected to the base and supports the head. Other parts include eyepiece tube that holds the eyepieces in place above the objective lens. Nosepiece houses the objectives that are mounted on a rotating turret so that different objectives can be selected. Coarse and Fine-adjustment knobs are used to focus the microscope to the specimen
Refracting telescopes are designed with lense at the front of the telescope the biggest so when the light rays enter, the real image is formed closer to the eyepiece, magnifying the image more. The equation to calculate the magnification of a telescope it M = Fo/Fe (Magnification = Focal length of object/Focal length of eyepiece). The image is shown on the focal point of the objective (first) lense, where the rays all meet. When light goes into a converging lense, it refracts towards the focal
lenses, the objective lens and the eyepiece len, to collect and refract parallel rays of light from distant objects in a specific way to produce a image that fits the size of our eyes pupil. The light rays are gathered through the opening of the telescope called the aperture, they then travel through the objective lens and refract onto a single point called the focal point. From here the light rays continue to travel in the same direction until they reach the eyepiece lens, which refracts the light back
telescopes is the use of two glass lenses (objective lens and eyepiece lens) to gather and bend parallel light rays in a certain way so that the image fits the size of the eye's pupil. Light rays is gather through the opening of the telescope called the aperture and passes through the objective lens and refracts onto a single point called the focal point. From there the light rays continue the same direction until it hits the eyepiece lens which also refract the light back into parallel rays. During
Introduction to light: Electromagnetic radiation is a form of light energy. Electromagnetic is made up from visible light, invisible light (ultraviolet, infrared, X-rays, radio waves and microwaves). In vacuum lights maximum velocity is 3.0x10^8 m/s. Reflection: If an object does not radiate its own light, it must reflect light to be visible. Reflection includes two beams - an approaching or incident beam and an active or reflected beam. The imaginary line that is perpendicular to the principal axis
magnifying them using a series of lenses. Microscopes vary from models and styles, but each consists of similar parts including lens, eyepiece, stage, adjustment knobs, light, nosepiece, and arm. The eyepiece allows an individual to look through it to view samples. Usually the magnification of an eyepiece 10x. The arm supports the tube which connects the eyepiece to the objective lenses and the base. The objectives are referred to as the different magnification lenses that are rotated on the nosepiece
Telescopes come in a few types based on what they are meant to view like space telescopes or solar telescopes. The Refracting Telescope An optical telescope is one that an astronomer uses to view planets and galaxies with their eye pressed to an eyepiece.
experimental procedures are planned, designed and evaluated properly, the use of microscopes, producing valid results and recording results. To develop techniques of measuring the size of plant fibers under microscope using stage micrometer and eyepiece graticule. Introduction: Pumpkin plant Pumpkin is of the genus Cucurbita and family Cucurbitaceae . Pumpkins are grown all around the world for a variety of reasons ranging from agricultural purposes to commercial and ornamental sales. Furthermore
refracting telescope is one of many different types of telescope. Refracting telescopes work by refracting the light through an initial convex lens, (known as the objective lens), then through another convex lens (known as the eyepiece lens). These two lenses focus the light into the eyepiece so we can see the image clearly. What is refraction? Refraction is a process that occurs when light travels between media of different optical density. Light travels at a speed of roughly 3.0 × 108ms-1 in a vacuum.
Introduction to light: Electromagnetic radiation is a form of light energy. Electromagnetic is made up of visible light, invisible light (ultraviolet, infrared, X-rays, radio waves and microwaves). In vacuum lights maximum velocity is 3.0x10^8 m/s. Reflection: If an object does not radiate its own light, it must reflect light to be visible. Reflection includes two beams - an approaching or incident beam and an active or reflected beam. The imaginary line that is perpendicular to the principal axis
The effect of these refractions is that the image is magnified and if the second eyepiece is convex is inverted. The equation used to calculate lenses (descartes formula) can be also used to calculate the refractor telescope. The equation is: 1f=1d0+1di This is equation can be applied to the refractor telescope to find the nature of
Refracting Telescopes- Physics Internal Refractor telescopes were first invented in 1608 by a man named Hans Lippershey. The refractor telescope was then adapted a number of times with the later version of the refractor telescope made by Johannes Kepler. This structure of Kepler’s refractor telescope is the base design of what most refractors telescopes today are made from. Light in Different Media While light passes from one medium to another it is subject to refraction. Refraction is the action
What is a refractometer and what are the uses? A refractometer is an optical device that is used to measure the optical density or refractive index of a substance. Refractive index is a dimensionless number that describes how light, or any other radiation is bent as it moves through a medium. It is the ratio of light’s velocity in a vacuum (n=1) to its velocity in the sample. The greater the increase in optical density or refractive index, the greater the speed of light is reduced in a solid, gas
Two eyepieces let you explore the moon, stars and planets. The tripod is sturdy and you have the help of a 3X Barlow multiplier that increases what you see and with that you can have lots to show and tell your friends about the next day. With a few extra attachments
LAW OF REFLECTION When a light ray strikes a plane mirror it changes its direction which is known as “reflection”. The light ray, which strikes the mirror, is known as “incident ray” and the ray after reflection is known as “reflected ray”. The perpendicular line which bisects the incident ray and reflected ray is called normal drawn to the point of intersection. The incident ray, reflected and the normal drawn to the point of intersection lie on the same plane. (Fig 1) When the light reflects