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  • Zacharias Jansen and The First Compound Microscope Essay

    893 Words  | 4 Pages

    resolution in a microscope is: R=λ/2NA where λ is the wavelength of light and NA is the numerical aperture of the objective lens. A higher value equated for R will give a poor resolution, whereas a lower value will form a more detailed resolution. A higher NA will produce a superior resolution because R will be reduced. Also, the smaller the wavelength, the lesser R will be, generating more detailed resolution. Because of this, the wavelength of blue/violet light is significantly smaller and will

  • Physics Of Light And Light

    1182 Words  | 5 Pages

    Through the fields incorporating the science of light, astronomers use factors such as wavelengths to interpret stars’ temperature, heat, distance, size, mass, density, etc. To obtain all of this information certain light gathering instruments must be used. These instruments include telescopes. To record this information spectrographs are also mainly used to record the spectrum and dispersion of light. In light there are different waves and particles. Light is made up of electric and magnetic

  • Electromagnetic Radiation and Electron

    1162 Words  | 5 Pages

    The wavelength of the wave the distance between the peak of one wave and the peak of the next, between the minimum of one and the minimum or the next, or between any two points the encompass one complete wave cycle. Equivalently, this is the distance the wave travels from when say the electron is at the peak of its motion and the next time it gets to the peak of its motion. Either way this is about 10 or so grid points. 5) If the amplitude is increased, what happens to the wavelength?

  • Pulse Oximetry Advantages And Disadvantages

    1191 Words  | 5 Pages

    light of certain specific wavelengths of light than deoxygenated haemoglobin and vice versa. Two wavelengths of light are used in pulse oximetry, red light of approximately 600nm, and infrared light with wavelengths of approximately 900nm. These two wavelengths of light are used to differentiate between two different substances, each with their own absorbance characteristics. b) When performing pulse oximetry there are various substance that will absorb both wavelengths of light, including the venous

  • Radio Waves and Electromagnetic Fields Essay examples

    1884 Words  | 8 Pages

    PHY112 – Lab 9 – Worksheet Directions •When you go to the simulation you will have a choice to either run the simulation or download the simulation. Run may not work on all computers. If it does not run, download the simulation and work from there. •When the simulation opens, play with the controls and buttons to become familiar with how the simulation works. •Note: A formal lab report is not required for this activity. You may cut and paste this worksheet to a new Word document and adjust the

  • Introduction to Optical Coherence Tomography

    1001 Words  | 4 Pages

    from traditional radar in several important ways. First, because OCT uses a much shorter wavelength of light than radio-frequency radar, OCT emissions only propagate about 1 mm into biological tissues. This limits the possible images from OCT as compared to MRI or CT scans, so OCT is only appropriate for some specific types of medical imaging, such as retinal scans. The benefit of using a shorter wavelength is an increase in imaging resolution. A typical OCT image has a resolution of 10-20 µm. At

  • Performance Analysis Of Fso Communication System

    1919 Words  | 8 Pages

    technologies. FSO provides the transmission of data with unlimited bandwidth. The atmospheric attenuation is caused by two main factors absorption and scattering. This paper investigates a performance study of free space optics channel for variable wavelengths 850 nm, 950 nm and 1550 nm at distance range of 1 km. The simulation reports minimum BER for NRZ-OOK modulation technique at different receiver diameters in presence of fog, rain and humidity attenuation. The results shows how to improve the system

  • A Study On The Field Of Neuroscience Essay

    1531 Words  | 7 Pages

    INTRODUCTION: Let There Be Light In the field of neuroscience, the endeavor to develop technologies that allow minimally invasive, temporally and spatially precise, and genetically specific neural activation has occupied the minds of neuroscientists for decades. To this end, photostimulation techniques have been of particular interest. In the early 2000s, a set of light-gated proteins called channelrhodopsins (ChRs) from the green alga Chlamydomonas reinhardtii were characterized1,2 and noted

  • The Physics Of A Wave

    790 Words  | 4 Pages

    Introduction As seen in the previous laboratory experiment, standing waves are produced when a wave and its reflection are superposed. When a wave travels on a string we notice places of maximum amplitude called antinodes, and regions of no amplitude at all, that we call nodes. When the medium in which the wave travels is air instead of a string, similar observations are made. In this case, the antinodes are regions of maximum compression in the air column, while the nodes are those regions which

  • 3.03 The Dimensions Of Waves

    364 Words  | 2 Pages

    ear identified the waves as light and sound. The waves of light and sound can describe in term of wavelength, frequency and amplitude. Wavelength is the distance from one peak of the wave to the next. Frequency is the number of complete waves or cycles that pass a given point amount of time. Amplitude is height of the wave from baseline to peak. These are shown in the Figure 3. The different wavelength, amplitude and frequency makes various sound and vision experience. Figure 03: The Dimension