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Simultaneous Evaluation of Cerebral Hemodynamics and Light Scattering Properties of the In Vivo Rat Brain Using Multispectral Diffuse Reflectance Imaging

1Graduate School of Bio-application & Systems Engineering, Tokyo University of Agriculture & Technology, 2Division of Biomedical Information Sciences, National Defense Medical College Research Institute, 3Graduate School of Science and Engineering, Yamagata University

JoVE 55399


 Neuroscience

Local Field Fluorescence Microscopy: Imaging Cellular Signals in Intact Hearts

1School of Natural Sciences, University of California, Merced, 2Centro de Investigaciones Cardiovasculares, Universidad de la Plata and Conicet, 3Facultad de Ingenieria, Universidad Nacional de Entre Rios, 4Department of Physiology, Midwestern University, 5School of Engineering, University of California, Merced

JoVE 55202


 Biology

Highly Resolved Intravital Striped-illumination Microscopy of Germinal Centers

1Biophysical Analytics, German Rheumatism Research Center, Leibniz Institute, 2Microscopy Core Facility, Max-Delbrück Center for Molecular Medicine, 3Immunodynamics, German Rheumatism Research Center, Leibniz Institute, 4LaVision Biotec GmbH, 5Immunodynamics and Intravital Imaging, Charité - University of Medicine

JoVE 51135


 Immunology and Infection

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

1Materials Science Division, Argonne National Laboratory, 2Department of Physics, University of Illinois at Chicago, 3Department of Physics, CUNY Queens College, 4Center for Nanoscale Materials, Argonne National Laboratory, 5Department of Physics, University of Northern Iowa, 6Institute for Materials Science, University of Tsukuba

JoVE 53948


 Engineering

High-definition Fourier Transform Infrared (FT-IR) Spectroscopic Imaging of Human Tissue Sections towards Improving Pathology

1Department of Bioengineering, University of Illinois at Chicago, 2Department of Pathology, University of Illinois at Chicago, 3Department of Biological Sciences, University of Illinois at Chicago, 4Department of Chemistry, University of Illinois at Chicago, 5Department of Nephrology, University of Illinois at Chicago

JoVE 52332


 Medicine

Large Volume, Behaviorally-relevant Illumination for Optogenetics in Non-human Primates

1McGovern Institute, Massachusetts Institute of Technology, 2Harvard-MIT Division of Heath Sciences and Technology, 3Department of Anesthesiology, Duke University Medical Center, 4Department of Biology, Massachusetts Institute of Technology, 5Division of Pharmacoengineering and Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, 6Media Lab and Department of Biological Engineering, Massachusetts Institute of Technology, 7Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology

Video Coming Soon

JoVE 56330


 JoVE In-Press

Interference and Diffraction

JoVE 10424

Source: Yong P. Chen, PhD, Department of Physics & Astronomy, College of Science, Purdue University, West Lafayette, IN

Interference and diffraction are characteristic phenomena of waves, ranging from water waves to electromagnetic waves such as light. Interference refers to the phenomenon of when two waves of the same kind overlap to give an alternating spatial variation of large and small wave amplitude. Diffraction refers to the phenomenon of when a wave passes through an aperture or goes around an object, different parts of the wave can interfere and also give rise to a spatial alternation of large and small amplitude. This experiment will demonstrate the wave nature of the light by observing diffraction and interference of a laser light passing through a single slit and double slits, respectively. The slits are simply cut using razor blades in an aluminum foil and the characteristic diffraction and interference patterns manifest as patterns of alternating light and dark fringes on a screen placed after the foil, when the light is shone through the slit(s) on the foil. Historically, the observation of diffraction and interference of light played important roles in establishing that light is an electromagnetic wave.


 Essentials of Physics II

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