What is a Gender Lens? Think of a gender lens as putting on spectacles. Out of one lens of the spectacles‚ you see the participation‚ needs and realities of women. Out of the other lens‚ you see the participation‚ needs and realities of men. Your sight or vision is the combination of what each eye sees. Gender is about relationships between men and women. Gender equality is about equal valuing of women and men - of their similarities and their differences. We need equal‚ respectful partnerships
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in this lab? (1 point) 6.State the function of the following parts of the microscope: (3 points) a.Iris diaphragm b.Ocular lens c.Condenser 7.State how to determine the following functions of the microscope (2 points) a.Diopter b.Interpupillary distance 8.What is the total magnification when using a compound microscope with an objective lens of 10X and an ocular lens of 4X? Show the calculation used to derive the answer. (2 points) 9.Why are coverslips used to observe specimens under the microscope
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REFRACTION THROUGH A LENS Lens: Lens is a transparent refracting medium bounded by two curved surface which are generally spherical. Types of lens: Generally there are two types of lens: 1. Convex lens: It is a lens which is thicker at the middle and thinner at the edges. It is also called converging lens as the light rays converges on passing through it at a point. Focal length of convex lens is taken as positive. 2. Concave lens: it is a lens which is thicker at the edges and thinner at the middle
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the image formed by a converging lens plus diverging lens. Background This experiment focused on a simple lens system. A simple lens is a piece of glassware that is spherical on one side and flat on another side‚ or spherical on both sides. There are two different types of lenses. A converging lens‚ also called a positive lens‚ and a diverging lens‚ also known as a negative lens. A converging lens thicker middle area than top and bottom‚ and the diverging lens has a skinnier mid-section. When
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The Fresnel Lens Do you know what the largest light house in America? Or how many steps it takes to get to the top? I do. It’s Cape Hatteras light house in Buxton‚ NC. It was completed in 1971 and stands 193 feet in the air. It takes 268 steps to climb to the top. I visited this light house in August of 2010 I had the pleasure of seeing the 6‚000 lb. bronze and crystal lens. In 1803 it was replaced due to being damaged by vandals. Light houses from the 18th century used burning candles‚ oil lamps
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clean the lenses of a microscope? (1 point) Because fibers in towels and cloths may contain foreign material which could scratch the lens and marks or lint‚ could be left on the lens making it appear dirtier than before 4. State the name of each of the tagged parts on the microscope shown above in step 1 of the Procedures: (11 points) a. Ocular Lens b. Body Tube c. Arm d. Objective Lenses e. Stage f. Condenser g. Diaphragm h. Coarse
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Introduction Experiment 9 introduced us to the concept of thin lenses. We were asked to determine the focal lengths of two converging lenses and one diverging lens. The following equations were used to calculate the focal lengths: 1/p + 1/q = 1/f where p is equal to the distance of the object from the lens and q is equal to the image length from the lens‚ and f is the focal point and 1/converging F+ 1/diverging F = 1/combined. The focal point is positive for converging lenses and negative for diverging lenses
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a word or phrase in the blank to make the statement true. __F__ 1) The microscope lens may be cleaned with any soft tissue. USE ONLY LENS PAPER. REGULAR TISSUES CAN SCRATCH THE LENSES. __F__ 2) The coarse adjustment knob maybe used in focusing with all objective lenses. COARSE ADJUSTMENT IS ONLY USED ON SCANNING POWER. __T__ 3) When beginning to focus‚ the lowest power lens should be used. __T__ 4) Resolution decreases as the amount of light coming in on
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Controlled assessment research Focus length of a lens- The most important characteristic of a lens is its principal focal length‚ or its inverse which is called the lens strength or lens "power". Optometrists usually prescribe corrective lenses in terms of the lens power in diopters. The lens power is the inverse of the focal length in meters: the physical unit for lens power is 1/meter which is called diopter Convex- The word convex means curving out or bulging outward‚ as opposed to concave
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How does a Lens Refract Light? Different Lenses refract light in different ways. First‚ we will look at a double convex lens. Several light rays will approach the convex lens in a parallel manner. After they approach the lens‚ each ray will refract towards the normal. The light is passing from an optical less dense medium (Air) into a more dense medium (such as plastic or glass) at this boundary. Since the light rays are passing the boundary from a less dense medium in which light travels fast (optically
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