Photographic lens

assistants have a lot more to do than just spinning a disc which is attached to a lens for 12 hours a day, but this single act deserves the applause being the most remarkable contribution that one makes to a film. Today we will

cataract surgery over the years the advantages and disadvantages plus on certain occasions the masterminds behind the innovations. Firstly it’s important to define cataract; a cataract is a cloudiness or opacity in the normally transparent crystalline lens of the eye. This cloudiness can cause a decrease in vision and may lead to eventual blindness. The word cataract has been derived from Greek origin which means waterfall. The original name was of Latin medicine but was lost in translation of Arabic

Zeiss] The microscope uses a compound lens which allows to get maximum magnification. The compound lens is made up of multiple lenses that have a common axis, allowing for a high magnification to be possible. The microscope consists of objective lens and eyepiece. The objective lens is a vital part of a microscope since the lens provides a few different variations of power for magnification, and the eyepiece magnification power helps multiply the objective lens power, which will create a large amount

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

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

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

so it is always covered by a thin layer of water (Simmich et al., 2012). The majority of vertebrate eyes use a single lens to form a focused image. One exception is the Spookfish, Dolichopteryx longipes, which has a secondary eye structure to enable it to see up and down. It is the only vertebrate eye to use a mirror, made of guanine plates, to focus light, rather than a lens (Figure 3). They live at 1000 metres around New Zealand; very little sunlight reaches

"biblical" worldview. What kind of lens do you use to view the events in the world? Believers should see the world differently because we should filter everything in the world through the lens of Scripture. So, when you look at a movie do you filter it through the lens of Scripture? When you listen to the news, do you filter it through the lens of Scripture? Do you filter conversations through the lens of Scripture? Do you observe what’s happening around you through the lens of Scripture? As Paul arrived

The documentary 400 years of Telescope is an education videos. This documentary is 60 minutes long and within 60 minutes it shows many historic stories about telescope, astronomy, and technology. The documentary is filmed with high quality cameras that made the video very interesting, the pictures that taken from the space are very clear to see, it made it easier to observe the work of the astronomer. As many people know the Universe is huge and it is hard for the astronomer to observe the Universe

Compound microscopes speak to a critical stride up in amplification, determination and trouble of utilisation from the stereomicroscope. Amplifications range from 2.5 x to around 1300 x with a comparing increment in determining force. Most perceptions with these instruments in the forensic science lab are made with transmitted light which puts constraints on the examples which are to be examined. Reflected light instruments, except for fluorescence microscopes and correlation microscopes used to