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SPEAKERS TRANSPORTATION CONFERENCE FAA COMMERCIAL SPACE 15TH ANNUAL John R
15TH ANNUAL FAA COMMERCIAL SPACE TRANSPORTATION CONFERENCE SPEAKERS COMMERCIAL SPACE TRANSPORTATION http://www.faa.gov/go/ast 15-16 FEBRUARY 2012 HQ-12-0163.INDD John R. Allen Christine Anderson Dr. John R. Allen serves as the Program Executive for Crew Health Christine Anderson is the Executive Director of the New Mexico and Safety at NASA Headquarters, Washington DC, where he Spaceport Authority. She is responsible for the development oversees the space medicine activities conducted at the Johnson and operation of the first purpose-built commercial spaceport-- Space Center, Houston, Texas. Dr. Allen received a B.A. in Speech Spaceport America. She is a recently retired Air Force civilian Communication from the University of Maryland (1975), a M.A. with 30 years service. She was a member of the Senior Executive in Audiology/Speech Pathology from The Catholic University Service, the civilian equivalent of the military rank of General of America (1977), and a Ph.D. in Audiology and Bioacoustics officer. Anderson was the founding Director of the Space from Baylor College of Medicine (1996). Upon completion of Vehicles Directorate at the Air Force Research Laboratory, Kirtland his Master’s degree, he worked for the Easter Seals Treatment Air Force Base, New Mexico. She also served as the Director Center in Rockville, Maryland as an audiologist and speech- of the Space Technology Directorate at the Air Force Phillips language pathologist and received certification in both areas. Laboratory at Kirtland, and as the Director of the Military Satellite He joined the US Air Force in 1980, serving as Chief, Audiology Communications Joint Program Office at the Air Force Space at Andrews AFB, Maryland, and at the Wiesbaden Medical and Missile Systems Center in Los Angeles where she directed Center, Germany, and as Chief, Otolaryngology Services at the the development, acquisition and execution of a $50 billion Aeromedical Consultation Service, Brooks AFB, Texas, where portfolio. -
502-13 Magnifiers and Telescopes
13-1 I and Instrumentation Design Optical OPTI-502 © Copyright 2019 John E. Greivenkamp E. John 2019 © Copyright Section 13 Magnifiers and Telescopes 13-2 I and Instrumentation Design Optical OPTI-502 Visual Magnification Greivenkamp E. John 2019 © Copyright All optical systems that are used with the eye are characterized by a visual magnification or a visual magnifying power. While the details of the definitions of this quantity differ from instrument to instrument and for different applications, the underlying principle remains the same: How much bigger does an object appear to be when viewed through the instrument? The size change is measured as the change in angular subtense of the image produced by the instrument compared to the angular subtense of the object. The angular subtense of the object is measured when the object is placed at the optimum viewing condition. 13-3 I and Instrumentation Design Optical OPTI-502 Magnifiers Greivenkamp E. John 2019 © Copyright As an object is brought closer to the eye, the size of the image on the retina increases and the object appears larger. The largest image magnification possible with the unaided eye occurs when the object is placed at the near point of the eye, by convention 250 mm or 10 in from the eye. A magnifier is a single lens that provides an enlarged erect virtual image of a nearby object for visual observation. The object must be placed inside the front focal point of the magnifier. f h uM h F z z s The magnifying power MP is defined as (stop at the eye): Angular size of the image (with lens) MP Angular size of the object at the near point uM MP d NP 250 mm uU 13-4 I and Instrumentation Design Optical OPTI-502 Magnifiers – Magnifying Power Greivenkamp E. -
Raptis-Rare-Books-Digital-Holiday
1 FOR THE COLLECTION OF A LIFETIME The process of creating one’s personal library is the pursuit of a lifetime. It requires special thought and consideration. Each book represents a piece of history, and it is a remarkable task to assemble these individual items into a collection. Our aim at Raptis Rare Books is to render tailored, individualized service to help you achieve your goals. We specialize in working with private collectors with a specific wish list, helping individuals find the ideal gift for special occasions, and partnering with representatives of institutions. We are here to assist you in your pursuit. Thank you for letting us be your guide in bringing the library of your imagination to reality. FOR MORE INFORMATION For further details regarding any of the items featured in these pages, visit our website or call 561-508-3479 for expert assistance from one of our booksellers. Raptis Rare Books | 226 Worth Avenue | Palm Beach, Florida 33480 561-508-3479 | [email protected] www.RaptisRareBooks.com Contents History, Philosophy & Religion..........................................................................2 American History...............................................................................................10 Literature.............................................................................................................24 Heroes and Leaders.............................................................................................40 Travel, Adventure and Sport.............................................................................54 -
Depth of Focus (DOF)
Erect Image Depth of Focus (DOF) unit: mm Also known as ‘depth of field’, this is the distance (measured in the An image in which the orientations of left, right, top, bottom and direction of the optical axis) between the two planes which define the moving directions are the same as those of a workpiece on the limits of acceptable image sharpness when the microscope is focused workstage. PG on an object. As the numerical aperture (NA) increases, the depth of 46 focus becomes shallower, as shown by the expression below: λ DOF = λ = 0.55µm is often used as the reference wavelength 2·(NA)2 Field number (FN), real field of view, and monitor display magnification unit: mm Example: For an M Plan Apo 100X lens (NA = 0.7) The depth of focus of this objective is The observation range of the sample surface is determined by the diameter of the eyepiece’s field stop. The value of this diameter in 0.55µm = 0.6µm 2 x 0.72 millimeters is called the field number (FN). In contrast, the real field of view is the range on the workpiece surface when actually magnified and observed with the objective lens. Bright-field Illumination and Dark-field Illumination The real field of view can be calculated with the following formula: In brightfield illumination a full cone of light is focused by the objective on the specimen surface. This is the normal mode of viewing with an (1) The range of the workpiece that can be observed with the optical microscope. With darkfield illumination, the inner area of the microscope (diameter) light cone is blocked so that the surface is only illuminated by light FN of eyepiece Real field of view = from an oblique angle. -
The Microscope Parts And
The Microscope Parts and Use Name:_______________________ Period:______ Historians credit the invention of the compound microscope to the Dutch spectacle maker, Zacharias Janssen, around the year 1590. The compound microscope uses lenses and light to enlarge the image and is also called an optical or light microscope (vs./ an electron microscope). The simplest optical microscope is the magnifying glass and is good to about ten times (10X) magnification. The compound microscope has two systems of lenses for greater magnification, 1) the ocular, or eyepiece lens that one looks into and 2) the objective lens, or the lens closest to the object. Before purchasing or using a microscope, it is important to know the functions of each part. Eyepiece Lens: the lens at the top that you look through. They are usually 10X or 15X power. Tube: Connects the eyepiece to the objective lenses Arm: Supports the tube and connects it to the base. It is used along with the base to carry the microscope Base: The bottom of the microscope, used for support Illuminator: A steady light source (110 volts) used in place of a mirror. Stage: The flat platform where you place your slides. Stage clips hold the slides in place. Revolving Nosepiece or Turret: This is the part that holds two or more objective lenses and can be rotated to easily change power. Objective Lenses: Usually you will find 3 or 4 objective lenses on a microscope. They almost always consist of 4X, 10X, 40X and 100X powers. When coupled with a 10X (most common) eyepiece lens, we get total magnifications of 40X (4X times 10X), 100X , 400X and 1000X. -
Project Apollo: Americans to the Moon John M
Chapter Two Project Apollo: Americans to the Moon John M. Logsdon Project Apollo, the remarkable U.S. space effort that sent 12 astronauts to the surface of Earth’s Moon between July 1969 and December 1972, has been extensively chronicled and analyzed.1 This essay will not attempt to add to this extensive body of literature. Its ambition is much more modest: to provide a coherent narrative within which to place the various documents included in this compendium. In this narrative, key decisions along the path to the Moon will be given particular attention. 1. Roger Launius, in his essay “Interpreting the Moon Landings: Project Apollo and the Historians,” History and Technology, Vol. 22, No. 3 (September 2006): 225–55, has provided a com prehensive and thoughtful overview of many of the books written about Apollo. The bibliography accompanying this essay includes almost every book-length study of Apollo and also lists a number of articles and essays interpreting the feat. Among the books Launius singles out for particular attention are: John M. Logsdon, The Decision to Go to the Moon: Project Apollo and the National Interest (Cambridge: MIT Press, 1970); Walter A. McDougall, . the Heavens and the Earth: A Political History of the Space Age (New York: Basic Books, 1985); Vernon Van Dyke, Pride and Power: the Rationale of the Space Program (Urbana, IL: University of Illinois Press, 1964); W. Henry Lambright, Powering Apollo: James E. Webb of NASA (Baltimore: Johns Hopkins University Press, 1995); Roger E. Bilstein, Stages to Saturn: A Technological History of the Apollo/Saturn Launch Vehicles, NASA SP-4206 (Washington, DC: Government Printing Office, 1980); Edgar M. -
How Do the Lenses in a Microscope Work?
Student Name: _____________________________ Date: _________________ How do the lenses in a microscope work? Compound Light Microscope: A compound light microscope uses light to transmit an image to your eye. Compound deals with the microscope having more than one lens. Microscope is the combination of two words; "micro" meaning small and "scope" meaning view. Early microscopes, like Leeuwenhoek's, were called simple because they only had one lens. Simple scopes work like magnifying glasses that you have seen and/or used. These early microscopes had limitations to the amount of magnification no matter how they were constructed. The creation of the compound microscope by the Janssens helped to advance the field of microbiology light years ahead of where it had been only just a few years earlier. The Janssens added a second lens to magnify the image of the primary (or first) lens. Simple light microscopes of the past could magnify an object to 266X as in the case of Leeuwenhoek's microscope. Modern compound light microscopes, under optimal conditions, can magnify an object from 1000X to 2000X (times) the specimens original diameter. "The Compound Light Microscope." The Compound Light Microscope. Web. 16 Feb. 2017. http://www.cas.miamioh.edu/mbi-ws/microscopes/compoundscope.html Text is available under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license. - 1 – Student Name: _____________________________ Date: _________________ Now we will describe how a microscope works in somewhat more detail. The first lens of a microscope is the one closest to the object being examined and, for this reason, is called the objective. -
Objective (Optics) 1 Objective (Optics)
Objective (optics) 1 Objective (optics) In an optical instrument, the objective is the optical element that gathers light from the object being observed and focuses the light rays to produce a real image. Objectives can be single lenses or mirrors, or combinations of several optical elements. They are used in microscopes, telescopes, cameras, slide projectors, CD players and many other optical instruments. Objectives are also called object lenses, object glasses, or objective glasses. Microscope objectives are typically designed to be parfocal, which means that when one changes from one lens to another on a Several objective lenses on a microscope. microscope, the sample stays in focus. Microscope objectives are characterized by two parameters, namely, magnification and numerical aperture. The former typically ranges from 5× to 100× while the latter ranges from 0.14 to 0.7, corresponding to focal lengths of about 40 to 2 mm, respectively. For high magnification applications, an oil-immersion objective or water-immersion objective has to be used. The objective is specially designed and refractive index matching oil or water must fill the air gap between the front element and the object to allow the numerical aperture to exceed 1, and hence give greater resolution at high magnification. Numerical apertures as high as 1.6 can be achieved with oil immersion.[1] To find the total magnification of a microscope, one multiplies the A photographic objective, focal length 50 mm, magnification of the objective lenses by that of the eyepiece. aperture 1:1.4 See also • List of telescope parts and construction Diastar projection objective from a 35 mm movie projector, (focal length 400 mm) References [1] Kenneth, Spring; Keller, H. -
6. Imaging: Lenses & Curved Mirrors
6. Imaging: Lenses & Curved Mirrors The basic laws of lenses allow considerable versatility in optical instrument design. The focal length of a lens, f, is the distance at which collimated (parallel) rays converge to a single point after passing through the lens. This is illustrated in Fig. 6.1. A collimated laser beam can thus be brought to a focus at a known position simply by selecting a lens of the desired focal length. Likewise, placing a lens at a distance f can collimate light emanating from a single spot. This simple law is widely used in experimental spectroscopy. For example, this configuration allows collection of the greatest amount of light from a spot, an important consideration in maximizing sensitivity in fluorescence or Raman measurements. The collection Figure 6.1: Parallel beams focused by a lens efficiency of a lens is the ratio Ω/4π, where Ω is the solid angle of the light collected and 4π is the solid angle over all space. The collection efficiency is related to the F-number of the lens, also abbreviated as F/# or f/n. F/# is defined as the ratio of the distance of the object from the lens to the lens diameter (or limiting aperture diameter). In Fig. 6.1 above, the f- number of lens is f/D - ! 1 = 2 . 4" $#4(F / #)&% The collection efficiency increases with decreased focal length and increased lens diameter. Collection efficiency is typically low in optical spectroscopy, such as fluorescence or Raman. On the other hand, two-dimensional imaging (as opposed to light collection) is limited when the object is at a distance of f from the lens because light from only one point in space is collected in this configuration. -
What's the Size of What You See? Determine the Field Diameter of a Compound Microscope
4th NGSS STEM Conference MAKING SCIENCE COUNT Integrating Math into an NGSS Classroom January 20, 2017 | Pier 15, San Francisco, CA What's the Size of What You See? Determine the field diameter of a compound microscope. By measuring the field diameter of a microscope, you can calculate the real sizes of objects too small to see with the naked eye. Tools and Materials • Compound microscope • Pencil and notepaper to record results • Calculator • Clear plastic metric ruler with millimeter markings (copy this template onto a transparency to make your own) • Optional: microscopic objects to view and measure 4th NGSS STEM Conference MAKING SCIENCE COUNT Integrating Math into an NGSS Classroom January 20, 2017 | Pier 15, San Francisco, CA Assembly None needed. To Do and Notice Find the total magnification of your microscope. First, read the power inscribed on the eyepiece. You’ll find it marked as a number followed by an X, which stands for “times.” Record the eyepiece power. Find the three barrel-shaped objective lenses near the microscope stage. Each will have a different power, which should be marked on the side of the lens. Record the power for each objective. Find the total magnification for each objective lens by multiplying the power of the eyepiece by the power of the objective. Lowest Magnification: Eyepiece x Lowest power objective = ________X Medium Magnification: Eyepiece x Medium power objective = ________X Highest Magnification: Eyepiece x Highest power objective = ________X Set the microscope to its lowest magnification. Slide the plastic metric ruler onto the stage and focus the microscope on the millimeter divisions. -
Basic Microscopy Microscopy: Historical Perspective Introduction
Basic Microscopy Microscopy: Historical Perspective Introduction Throughout history, the purpose of the optical or light microscope has not always been for research and the production of beautiful, accurate images. For many centuries, the construction of microscopes and the underpinning optical systems was entirely an issue of exterior cosmetic craftsmanship, with the design of optical components lagging seriously behind advances in the fabrication of microscope bodies and frames. Greater trouble and effort was invested in the outer appearance of these early instruments, while their performance depended on the experience of the lens grinders, and the (good or bad) results obtained were often sheer coincidence. In many cases, microscopes were simply toys or show pieces intended to increase the prestige of their owners. The dichotomy between appearance and quality of the images such instruments provided was, by today's standards, striking (see Figure 1). Nevertheless, microscopy became a beloved pastime of the wealthy in the 18th century and many nights were spent observing local specimens, an affair that often involved entire families. For example, Elizabeth Charlotte of the Palatinate, who became famous as the sister-in-law of Louis XIV, owned a valuable microscope and used it regularly. She correctly predicted that this instrument would be of inestimable value for medical applications in the future. Her foresight was almost visionary at that time. While working in a store where magnifying glasses were used to count the number of threads in cloth, Anton van Leeuwenhoek of Holland, who is often referred to as the father of microscopy, taught himself new methods for grinding and polishing small, curved lenses that magnified up to 270 diameters. -
Issue #87 of Lunar and Planetary Information Bulletin
Lunar and Planetary Information BULLETIN Fall 1999/NUMBER 87 • LUNAR AND PLANETARY INSTITUTE • UNIVERSITIES SPACE RESEARCH ASSOCIATION CONTENTS EXTRASOLAR PLANETS THE EFFECT OF PLANET DISCOVERIES ON FACTOR fp NEWS FROM SPACE NEW IN PRINT FIRE IN THE SKY SPECTROSCOPY OF THE MARTIAN SURFACE CALENDAR PREVIOUSPREVIOUS ISSUESISSUES n recent years, headlines have trumpeted the beginning of a I new era in humanity’s exploration of the universe: “A Parade of New Planets” (Scientific American), “Universal truth: Ours EXTRASOLAR Isn’t Only Solar System” (Houston Chronicle), “Three Planets Found Around Sunlike Star” (Astronomy). With more than 20 extrasolar planet or planet candidate discoveries having been announced in the press since 1995 (many PLANETS: discovered by the planet-searching team of Geoff Marcy and Paul Butler of San Francisco State University), it would seem that the detection of planets outside our own solar system has become a commonplace, even routine affair. Such discoveries capture the imagination of the public and the scientific community, in no THE small part because the thought of planets circling distant stars appeals to our basic human existential yearning for meaning. SEARCH In short, the philosophical implication for the discovery of true extrasolar planets (and the ostensible reason why the discovery of FOR extrasolar planets seems to draw such publicity) is akin to when the fictional mariner Robinson Crusoe first spotted a footprint in NEW the sand after 20 years of living alone on a desert island. It’s not exactly a signal from above, but the news of possible extrasolar WORLDS planets, coupled with the recent debate regarding fossilized life forms in martian meteorites, heralds the beginning of a new way of thinking about our place in the universe.