Optics

2. Background on the mineralogical composition of petrified woods A diverse suite of minerals and phases have been found in petrified woods from all over the world. The common species found range from pure opal to pure quartz whereas others include calcite, dolomite, pyrite, goethite, phosphates (apatite), laumontite, uraninite, sphalerite and organics (Nowak et al., 2005). In coal deposits inundated by sea-water (Yossifova et al., 2011), the woods can be permineralized by quartz, plagioclase, muscovite

The ability to become young again, live forever, and to heal any wound has been discovered in 1991! Ron and Tom are archaeologists from Australia, and their latest mission is to retrieve the Crown of Life from the Tomb of Neferkheperuhersekheper located in Egypt. Whoever wears the Crown of Life will become young, never die, and heal you whenever you get hurt. Ron and Tom arrived at the entrance to the tomb. They put on their packs filled to the brim with their gear. The map showed that there were

Aperture is a hole within a lens, where light travels into its body. Depth of Field is the area of the image that looks clear. The aperture impacts the depth of field directly, the larger the aperture and vice versa, the larger the depth of field. For the picture above, as the aperture gets smaller, the depth of field gets smaller, thus smaller amounts of the picture appears clearer. As for the picture below, as the aperture gets bigger, lesser amounts of light is exposed to the camera, thus the

5. Direct imaging of transient structure dynamics and 4D Electron Tomography The development of ultrafast electron microscopy was a revolution step in the field. UEM allows for connect the ultrafast electron diffraction dynamics measurement with the structure morphology of the sample under study. Barwick et al. [82] utilized the UEM to study the structural dynamics and morphological changes in single crystal gold and graphite films. In this study, the structure change of specific area of the sample

Results and discussions: The structure of the prepared material was investigated employing many techniques such as X-rays diffraction, SEM and TEM electron microscopy. In order to scrutinize the crystal structure of the samples X-rays diffraction was carried out using diffractometer XPERT-MPDUG, Philips PW3040. Figure (1) depicts the X-ray diffraction of the as synthesized samples. It can be seen that the nature of the sample is formed in poly crystalline form. The most important peaks are displayed

The refractor telescope has many advantages and disadvantages. One of the disadvantages is that the lenses are made of glasses therefore it has to be perfect with no air bubbles or scratches in the glass as this will impair the users viewing. Another disadvantage is that lense are weakest around the edges because they are thinnest there and that is the only place they are being supported by the telescope so this can lead to easy breakage. The lense can have colour distortion which means when white

A photographer’s job is to capture a moment in a tangible form in which can last forever, perhaps in someone’s memory, or digitized in someone’s phone or modern museum and shown to the public. No matter the type of photographer, they will always take a photograph of human emotions, whatever the subject. Pepper No. 30 by Edward Weston is a simple picture of a bell pepper. What is less known about the photograph is that the exposure had taken up to six hours with an f-stop of f/240 (PetaPixel). Every

Microscope While some looked to the cosmos, there were others more interested in the smallest details. The discovery of the microscope marked the beginning of modern biology, as this instrument helped boost biological studies and exposed the universe of tiny The Discourse on the Method It is considered as the important work of René Descartes, is a work that seeks to highlight the method to reach true knowledge and find the truth; It is a work that inaugurated modern philosophy. Among its benefits

Photography was derived from the Greek word “photos” meaning light and “graphein” meaning to draw. Photography is a method used by vast amount of people today, to capture images through the reaction of light and sensitive material. Throughout time, photography has evolved due to technological advancements, making it available to almost everyone. “Cameras have evolved from a pinhole up to the latest and accessible SLRs and DSLRs. Underwater, disposable and film and digital cameras were also invented

THANDRA PAPARAYA INSTITUTE OF SCIENCE AND TECHNOLOGY Department Of Electronics And Communications (ECE) Subject An Advanced Seminar on… Optical Camouflage Author 1 Munakala .Nagaraju Mail id: tpistece403@gmail.com Contact Number: 7799224496 9966557668 Contact Address Thandra Paparaya Institute Of Science & Technology, Komatapalli, Vizianagaram Dist. ABSTRACT: Imagination is impetus to