Laser Doppler vibrometer

    Page 1 of 3 - About 24 Essays
  • Mechanical Vibration Experiment

    The principle of physical governing the measurement system is the Doppler Effect that occurs when the laser beam is reflected from a small area of the testing object that vibrate. The figure below gives the pictorial representation of the Doppler Effect. The loudspeaker represents a sound source and it is assumed that the observer is standing on the right of the speaker. The lines originating from the speaker represents the vibration maxima at a specific observation time…

    Words: 1464 - Pages: 6
  • Laser Fact Or Science Fiction

    Fact or Science Fiction: Could Lasers become Viable Weapons in Modern World? When I say the word ‘laser’, what is the first thing that comes to your mind? Perhaps, like the majority of people, your brain jumps straight to the science fiction. For decades, since 1898 when HG Wells novel War of the Worlds swept the nation, lasers have been popular within the genre of science fiction. From lightsabers, to ray guns it seems lasers have been imagined as a myriad of different weapons. This…

    Words: 1997 - Pages: 8
  • Ultrafast Electron Microscopy Analysis

    resolution of UEM by generation ~ 30 fs electron pulse (200 KeV) by the optical-gating approach using a visible laser pulse with the strength for probing the matter dynamics. Moreover, the…

    Words: 1738 - Pages: 7
  • The Importance Of Photometry In The Laser Interferometer

    some useful information about the properties of the object or phenomenon under test. Interferometers are used to make very small measurements that cannot be achieved with any other method. An important application of interferometry is in the Laser Interferometer Gravitation wave Observatory(LIGO) which is used to detect gravitational waves predicted by Einstein.1.1 The LIGO interferometer is like the Michelson Interferometer as shown in…

    Words: 1160 - Pages: 5
  • Refractive Surgery: Lasik Surgery

    Astigmatism. Nearsightedness (myopia) is when you can see nearby objects clearly, but distant objects seem blurry. Long-sightedness (hyperopia) is when you can see distant objects clearly, but nearby objects seem blurry and Astigmatism causes overall blurry vision. In most cases, laser eye surgery is pain-free and is completed within 15 minutes for both eyes. It takes 24 hours to see improvement in vision without eye glasses or contact lenses.…

    Words: 1001 - Pages: 5
  • Conditions And Effects Of Laserer Power And B Content On 3DQCN Microstructure

    conditions (Task 1), fabrication thermal analysis (Task 2), fabricated parts performance (Task 3), microstructure control methodology (Task 4), respectively. These tasks are designed to answer the questions and solve the problems in the results of preliminary experiments and observations from reported investigations. 5.1. Task 1. Investigating feasible formation conditions and effects of laser power and B content on ultrafine 3DQCN microstructure. 5.1.1. Research questions generation In the…

    Words: 1607 - Pages: 7
  • Why DO-DION NP Powders Are Chosen As Photocatalysts

    4. Why PdO/TiON NP powders are chosen as photocatalyst? There are many reasons why PdO/TiON NP powders are chosen as a photocatalyst for MTBE mineralization under visible light. These reasons are listed and discussed as follows: 1- The synergistic effect. 2- The ease of synthesis. 3- The memory effect. 4.1 The synergistic effect Nowadays, modified TiO2 by metal and nitrogen is considered as one of the most promising TiO2 based materials for photocatalytic applications, which is able to…

    Words: 980 - Pages: 4
  • Creative Writing: Wilderness On The Lake, Wisconsin Dells

    Pasha’s room had a jacuzzi, Angelina’s room and mine, our own bathroom, Jessica and Pasha had their own bathroom, too. There was a kitchen, a table to eat at, a living room, and there was a washer and dryer. The first game that we did was go-karts and it was so wild! I was so scared because I was going fast, I kept bumping to the sides, and I was last place in the end, but the breeze felt good and the go-karts were so fun and crazy!! Angelina could still use her go-kart pass, but she can’t go…

    Words: 1459 - Pages: 6
  • Laser Weapon Systems: Most Important Contributions Of The US Navy

    Laser Weapon Systems (LaWS) MIDN 3/C Sangrones, Joshua Jacksonville University Laser Weapon System In today’s standards, missiles and rockets are common when it comes to nations’ military warships. However, coinciding with the development of more advanced weapon systems, there are also advances in their counter measures. Such defense systems include the United States Navy’s Laser Weapon Systems (LaWS). Its creation allowed a more cost efficient and more effective way of countering enemy…

    Words: 979 - Pages: 4
  • Kinect V2 Case Study

    value is calculated as the center of the circle. The difference between the mentioned average depth value and the true depth value is defined as depth accuracy. Specifically, by denoting the depth values measured by a Kinect v2 as a set Formula Md , and the true distance between the planar surface and Kinect as Formula , the depth accuracy can be computed by the following equation Depth accuracy = d − mean(Md ) (3.1) where Mean(.) computes the mean value of (.). To compute the depth accuracy, a…

    Words: 1377 - Pages: 6
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