MIRROR -The simplest and the most common optical instrument. -Uses the Law of Reflection to redirect light it receives. -It reflects most of the light in one direction. -Good reflecting mirrors can have 85% reflectance. Types of Mirror 1. Plane Mirror A mirror with a flat surface. Image formed: Laterally inverted Upright and always the same size as the object they reflect. Virtual image (images appear to behind the mirror) at the same distance as the object in front of the mirror. Examples:
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The electron microscope‚ instrument that produced the first magnified image showing three-dimensional’ and highly magnified image of a small object. It directs a beam of electrons rather than light through a specimen. The beam of electrons is created from an electron gun. This beam then travels through the length of the microscope cylinder‚ which contains the lenses‚ the specimen chamber‚ and the image-recording system. Two types of electron lenses are used‚ electrostatic and electromagnetic
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is the Photographic & Optical Equipment/Supplies Manufacturing they also apart of many others including The Manufacturing sector‚ Machinery Manufacturing‚ Semiconductor Equipment manufacturing‚ Control‚ Electromedical‚ measuring & navigational Instruments manufacturing‚ and Electromedical‚ Electrotherapeutic & X-Ray Apparatus Manufacturing. In 2015 67% of their sales went to imaging products‚ 19% of their sales went to precision equipment‚ 8% of their sales went to instruments‚ and 6% of their sales
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parallaxes of 29 stars with large proper motions. Astronomy Letters‚ 36(8)‚583.doi:10.1134/S1063773710080062 konrad B. Krauskopf‚ A. B. (2012). the physical universe (fifteenth edition ed.). McGraw-hill. Lacki‚ B. C. (2011). Cherenkov telescopes as optical telescopes for bright sources: today ’s specialized 30-m telescopes?. Monthly Notices Of The Royal Astronomical Society‚ 416(4)‚ 3075-3082.doi:10.1111.1365-2966.2011.19255.x Muldrew‚ (2012). Muldrew‚ S. I.‚ Croton‚ D. J.‚ Skibba‚ R. A.‚ Pearce‚ F
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| SCIENCE - FORM 2 | | The World Through Our Senses | | SENSORY ORGANS AND THEIR FUNCTIONS 1. Sensory organs are used to detect every changes in the environment. (a) Sensory organs are possessed by human and all animals. (b) Sensory organs allow the body to respond to the stimuli surroundings. Stimuli from the surroundings. Stimuli are changes that happen in the environment. (c) Sensory organs have receptors that receive the stimuli and then‚ send them as impulses to the
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Telescopes Hans Lippershey (1570 - September 1619) was a Dutch lens maker. Lippershey is believed to be the first to apply for a patent for his design‚ a few weeks before Jacob Metius (a Dutch instrument maker and optician)‚ and making it available for general use in 1608. The telescope invented by Lippershey was composed of a convex and a concave lens‚ as this construction did not invert the image and had only a magnification of just 3x. Galileo’s telescope improved the original Dutch telescopes
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BTN 211 TOTORIAL 1 Chapter 1 1. The History and Scope of Microbiology Which of the following distinguish the field of microbiology from other fields of biology? a. the size of the organism studied b. the techniques used to study organisms regardless of their size c. both the size of the organism studied and the techniques employed in the study of organisms d. neither the size of the organism studied nor the techniques employed in the study of organisms regardless of their size Who of
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solution’s refractive index to a standard curve. To know about refractive index measurement first of all we know something about refractive index. What is refractive index? In optics the refractive index or index of refraction n of a substance (optical medium) is a dimensionless number that describes how light‚ or any other radiation‚ propagates through that medium. It is defined as ‚ Where‚ where c is the speed of light in vacuum v is the speed of light in the substance example‚ the refractive
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Introduction A microscope is an optical instrument used for viewing very small objects‚ typically magnified several hundred times. It consist of different lenses such as: Scanning = 4X‚ Low power = 10X‚ High power = 40 or 43X‚ Oil Immersion = 100X. A microscope is an instrument to see objects too small for the naked eye. It’s a device used for magnifying small entities which cannot be seen by the eyes without any additional aid‚ it uses combination of magnifying lenses with a rotator that can be used
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magnification. 2. Mircoscope resolution is limited by the wavelength of the source of illumination (visible light‚ in the case of an optical microscope) and the numerical aperture of the lenses. Smallest object viewable limited by resolution which is limited by wavelength of the source of illumination and N.A of the lenses. Lab: Stero microscope low power instrument used in visualizing large objects at low magnification (5-50X); produces unreversed‚ right side up‚ 3-d image; unlike the compound
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