Posted by admin | Posted in Gold Prospector data and equipment | Posted on 19-07-2010
Tags: metal detectors depth, metal detectors depth test
physics help speed, distance and time?
i have this question that really hard and i dont know what to do. if anyone could answer it oand talk through the stages that would really help.
“a crack in a metal pipe is 0.006m deep inside the pipe. assuming the speed of a sound pulse in the metal is 6500m/s how long would the return echo of the sound pulse take to reach a detector?”
also
“sonar is used to find the depth of water in the middle of the english channel. it takes 0.42 seconds for the sound pulse to travel to the sea bed and return to the detector.a.)how far has the sound pulse travelled?
b.)how deep is the water at this point?
thanks,
t=d/t=0.012/6500=1.846 x 10^-6 s
you will nee the speed of sound in water for the 2nd part
Metal Detector Wireless Headphones Project Part 2
|
|
American Hawks Explorer II Metal Detector LCD Display Type of Object and Depth $109.99 Explorer II is a upper mid range Metal detector with LED display. The large screen will display the type of object found with a high degree of accuracy. Very accurately distinguish a Penney nickel or quarter. It can be used in All metal mode Set to discriminate and will give you a different two different tones for Ferrous an non Ferrous metals or set it for notch filter and set it will display the… |
|
|
Fisher F2 Metal Detector $199.00 Top of the line features at an entry level price point! The Fisher F-2 metal detector is the first model in the new F Series from Fisher metal detectors. The Fisher engineering team went back to the drawing board to design a totally fresh concept in metal detecting. The F series is perfectly balanced and feature packed. This entry level model features the same great depth that Fisher is known for … |
|
|
Garrett Depth Multiplier for Garrett Investigator CX Plus 1611700Garrett Depth Multiplier for Garrett Investigator CX Plus 1611700 Model GT-DP-1611700 $149.96 Garrett Depth Multiplier for Garrett Investigator CX Plus 1611700Garrett Depth Multiplier for Garrett Investigator CX Plus 1611700 Model GT-DP-1611700… |
|
|
Evaluation of an instrument to detect presence, size and depth of steel embedded in portland-cement concrete (Miscellaneous paper – U.S. Army Engineer Waterways Experiment Station) … |
|
|
Spectrum: Better Depth & Performance LEARNING ABOUT THE EAGLE SPECTRUM METAL DETECTOR…. |
|
|
DIGITAL METAL DETECTOR [Misc.] $265.99 Sold as each. Can detect coin-sized objects or larger up to 9″ deep. Motion discrimination metal detector. turn on and go operation. 4 tone target ID. 9 segment digital target ID. Coin depth indicator – digital display. Squelch tech noise reduction circuit. Touch pad all digital controls. Automatic ground balance. Interchangeable 8″ open face waterproof coil. Finds pouch & treasure trowel included… |
|
|
Infrared Detectors and Emitters $296.48 Infrared Detectors and Emitters: Materials and Devices provides an up-to-date view of the various detector/emitter materials systems currently in use or being actively researched. After an introduction to the history of IR detectors and emitters and the assessment methods used in both materials selection and device characterization, a review of detectors and lasers made in IV-VI materials is provided. Metal silicide Schottky IR detectors are then discussed before the emphasis switches to thermal detectors and medium wavelength IR (MWIR) detectors and emitters based on bulk and epitaxial InSb. The ternary system, InAsSb, is then discussed before the current situation in thallium-based III-V compounds, both ternary and quaternary, for IR detectors and emitters for the LW region is summarized. The dominant IR material, particularly in the LWIR region, is still mercury cadmium telluride (MCT) and chapters 10-12 focus on this system and the wide array of detectors and emitters. The final three chapters are devoted to an examination of the challenges to the dominant position of MCT in the LWIR field. The book is aimed at newcomers to the field as well as those already working in the IR industry. The former will find the book readable both as an introductory text and as a useful guide to the literature, while those in industry will find it a valuable overview of the entire field. |
|
|
Bounty Hunter Metal Detectors – Stereo Headphones $34.99 First Texas Products, with its worldwide brand name ?Bounty Hunter,? is the industry leader in hobby metal detectors. Whether you?re coin shooting, relic hunting, applying utility applications, or just enjoying a fun family activity, Bounty Hunter has the product you want, and its ?exclusive 5-year warranty? is the only one of its kind. Bounty Hunter has gone to great lengths to ensure the best quality product in the USA. Every Bounty Hunter metal detector includes a user manual that helps the pro and novice operate and score the biggest finds.?Feature Rich? Bounty Hunter metal detectors are easy to use and the lightweight construction makes it perfect on long hunts or searches around the backyard. Underwater, on a sandy beach, or doing a professional job, Bounty Hunter will perform at the highest level for any user. Stereo Headphones Designed especially for use with Bounty Hunter metal detectors, these headphones have true stereo sound with right/left volume controls and 1/4″ stereo plug. Made in USA. |
|
|
Ionizing Radiation Detectors For Medical Imaging $88.4 Ionizing Radiation Detectors for Medical Imaging contains ten technical chapters, half of which are devoted to radiology and the other half to nuclear medicine. The last chapter describes the detectors for radiotherapy and portal imaging. Each chapter addresses completely a specific application. The emphasis is always on detector fundamentals and detector properties. Where necessary, software and specific applications are described in depth. This book is intended for graduate and undergraduate students in physics and engineering who want to study medical imaging. In addition, scientists who are working in a specific sub-field of medical imaging can acquire from the book an up-to-date description of the state of the art in related sub-fields, within the scope of ionizing radiation detectors. Other scientists, as well as physicians, can use the book as a reference for medical imaging. |
|
|
Infrared Detectors and Systems (Wiley Series in Pure and Applied Optics) $190.98 This text covers the range of subjects necessary for the understanding of modern infrared-imaging systems at a level appropriate for seniors or first-year graduate students in physics or electrical engineering. The first six chapters focus on fundamental background issues of radiation detection, beginning with the basics of geometrical optics and finishing with a discussion of the figures of merit used for describing the signal-to-noise performance of a detector system. Other topics include radiometry and flux-transfer issues, basic radiation-detector mechanisms, and random-process mathematics. The presentation then moves on to specific detector technologies and the fundamental mechanisms of detection, paying special attention to responsivity and noise performance. Devices discussed include photovoltaic detectors, photoconductive detectors, thermal detectors, Schottky-barrier diodes, and bandgap-engineered photodetectors via multiple quantum wells and superlattices. The book concludes with a close look at infrared detection systems and related issues. In the discussion of infrared search systems, the range equation is developed in terms of the optical and detector parameters of the system. A separate chapter is devoted to modulation transfer function, a spatial-frequency-domain description of image quality. The final chapter describes the design equations for thermal-imager systems in terms of noise-equivalent temperature difference and minimum resolvable temperature. Supported and clarified by 470 illustrations and accompanied by an extensive glossary of the nomenclature, this is an excellent text for graduate and senior level courses in radiometry and infrared detectors. It is also a valuable reference for practicing engineers involved in the use, design, analysis, and testing of infrared detector-based systems. Infrared Detectors and Systems is a complete, accessible, and timely exposition of a technology whose applications are increasingly important and widespread. Based on courses presented by two of the field’s leading figures, this book provides extensive coverage of the background and fundamentals of radiation detection and goes on to examine specific technologies and systems in depth and, in some cases, for the first time in print. Technologies discussed include * Photovoltaic detectors * Photoconductive detectors * Thermal detectors * Schottky-barrier diodes * Bandgap-engineered photodetectors via multiple quantum wells and superlattices Supplemented with 470 illustrations and a complete glossary of the nomenclature, this is the ideal text for senior- and graduate-level courses in radiometry and optical detection. |
|
|
Particle Detectors $128 Reference on particle detectors for graduate students and researchers in particle physics. |
|
|
Infrared Detectors $261.33 ISBN-13: 9789056992033 ISBN-10: 9056992031 Title: Infrared Detectors. Author: A. Rogalski. |
|
|
HEADW Metal Detector Headphones $34.99 Bounty Hunter HEADW Metal Detector Headphones are small and lightweight and are designed for use with bounty hunter metal detectors. |
|
|
Bounty Hunter Metal Detector – Pouch and Trowel Kit $24.99 First Texas Products, with its worldwide brand name ?Bounty Hunter,? is the industry leader in hobby metal detectors. Whether you?re coin shooting, relic hunting, applying utility applications, or just enjoying a fun family activity, Bounty Hunter has the product you want, and its ?exclusive 5-year warranty? is the only one of its kind. Every Bounty Hunter metal detector includes a user manual that helps the pro and novice operate and score the biggest finds.?Feature Rich? Bounty Hunter metal detectors are easy to use and the lightweight construction makes it perfect on long hunts or searches around the backyard. Underwater, on a sandy beach, or doing a professional job, Bounty Hunter will perform at the highest level for any user. Pouch and Trowel Kit Works with every Bounty Hunter metal detector. Includes 9″ stainless steel trowel with depth gauge for digging. Nylon pouch with storage pockets. |
|
|
Infrared Detectors and Emitters $296.48 Infrared Detectors and Emitters: Materials and Devices provides an up-to-date view of the various detector/emitter materials systems currently in use or being actively researched. After an introduction to the history of IR detectors and emitters and the assessment methods used in both materials selection and device characterization, a review of detectors and lasers made in IV-VI materials is provided. Metal silicide Schottky IR detectors are then discussed before the emphasis switches to thermal detectors and medium wavelength IR (MWIR) detectors and emitters based on bulk and epitaxial InSb. The ternary system, InAsSb, is then discussed before the current situation in thallium-based III-V compounds, both ternary and quaternary, for IR detectors and emitters for the LW region is summarized. The dominant IR material, particularly in the LWIR region, is still mercury cadmium telluride (MCT) and chapters 10-12 focus on this system and the wide array of detectors and emitters. The final three chapters are devoted to an examination of the challenges to the dominant position of MCT in the LWIR field. The book is aimed at newcomers to the field as well as those already working in the IR industry. The former will find the book readable both as an introductory text and as a useful guide to the literature, while those in industry will find it a valuable overview of the entire field. |
|
|
Bounty Hunter Metal Detectors – Stereo Headphones $34.99 First Texas Products, with its worldwide brand name ?Bounty Hunter,? is the industry leader in hobby metal detectors. Whether you?re coin shooting, relic hunting, applying utility applications, or just enjoying a fun family activity, Bounty Hunter has the product you want, and its ?exclusive 5-year warranty? is the only one of its kind. Bounty Hunter has gone to great lengths to ensure the best quality product in the USA. Every Bounty Hunter metal detector includes a user manual that helps the pro and novice operate and score the biggest finds.?Feature Rich? Bounty Hunter metal detectors are easy to use and the lightweight construction makes it perfect on long hunts or searches around the backyard. Underwater, on a sandy beach, or doing a professional job, Bounty Hunter will perform at the highest level for any user. Stereo Headphones Designed especially for use with Bounty Hunter metal detectors, these headphones have true stereo sound with right/left volume controls and 1/4″ stereo plug. Made in USA. |
|
|
Particle Detectors $128 Reference on particle detectors for graduate students and researchers in particle physics. |
|
|
Infrared Detectors $261.33 ISBN-13: 9789056992033 ISBN-10: 9056992031 Title: Infrared Detectors. Author: A. Rogalski. |
|
|
HEADW Metal Detector Headphones $34.99 Bounty Hunter HEADW Metal Detector Headphones are small and lightweight and are designed for use with bounty hunter metal detectors. |
|
|
Pixel Detectors $108 Pixel detectors are a particularly important class of particle and radiation detection devices. This book offers a general purpose introduction into the fundamental principles of pixel detector technology and semiconductor-based hybrid pixel devices. It is useful for those working in a laboratory involved in developing or using particle detection. |
|
|
BHPIN Pinpointer Metal Detector $44.99 The Bounty Hunter Pinpointer pinpoints exact location of buried metal objects. The Pinpointer was designed to be used with any of our metal detectors to help find treasures. It is also a handy tool for homeowners, hobbyists, and mechanics; anyone needing |
|
|
Infrared Detectors and Systems $223.07 ISBN-13: 9780471122098 ISBN-10: 0471122092 Title: Infrared Detectors and Systems. Author: Eustace L. Dereniak. |
|
|
Physics of Particle Detectors $67.27 ISBN-13: 9780521675680 ISBN-10: 0521675685 Title: Physics of Particle Detectors. Author: Dan Green. |
|
|
Selective Gas Chromatographic Detectors $493.5 ISBN-13: 9780444424884 ISBN-10: 0444424881 Title: Selective Gas Chromatographic Detectors. Author: M. Dressler. |
|
|
The Lie Detectors $4.48 The story of the lie detector takes us straight into the dark recesses of the American soul. It also leads us on a noir journey through some of the most storied episodes in American history. That is because the device we take for granted as an indicator of guilt or innocence actually tells us more about our beliefs than about our deeds. The machine does not measure deception so much as feelings of guilt or shame. As Ken Alder reveals in his fascinating and disturbing account, the history of the lie detector exposes fundamental truths about our culture: why we long to know the secret thoughts of our fellow citizens; why we believe in popular science; and why America embraced the culture of "truthiness."For centuries, people searched in vain for a way to unmask liars, seeking clues in blushing cheeks, shifty eyes, and curling toes…all the body’s outward signs. But not until the 1920s did a cop with a Ph.D. team up with an entrepreneurial high school student from Berkeley, California and claim to have invented a foolproof machine that peered directly into the human heart. In a few short years their polygraph had transformed police work, seized headlines, solved sensational murders, and enthralled the nation. In Chicago, the capital of American vice, the two men wielded their device to clean up corruption, reform the police, and probe the minds of infamous killers. Before long the lie detector had become the nation’s "mechanical conscience," searching for honesty on Main Street, in Hollywood, and even within Washington, D.C. Husbands and wives tested each other’s fidelity. Corporations tested their employees’ honesty. Movie studios and advertisers tested their audiences’ responses. Eventually, thousands of government employees were tested for their loyalty and "morals" — for lack of which many lost their jobs.Yet the machine was flawed. It often was used to accuse the wrong person. It could easily be beaten by those who knew how. Repeatedly it has been applied as an instrument of psychological torture, with the goal of extracting confessions. And its creators paid a commensurate price. One went mad trying to destroy the Frankenstein’s monster he had created. The other became consumed by mistrust: jealous of his cheating wife, contemptuous of his former mentor, and driven to an early death. The only happy man among the machine’s champions was the eccentric psychologist who went on to achieve glory as the creator of Wonder Woman.Yet this deceptive device took America — and only America — by storm. Today, the CIA still administers polygraphs to its employees. Accused celebrities loudly trumpet its clean bill of truth. And the U.S. government, as part of its new "war on terror," is currently exploring forms of lie detection that reach directly into the brain. Apparently, America still dreams of a technology that will render human beings transparent.The Lie Detectors is the entertaining and thought-provoking |
|
|
Detectors for Particle Radiation $52.98 This textbook provides a clear, concise and comprehensive review of the physical principles behind the devices used to detect charged particles and gamma rays, and the construction and performance of these many different types of detectors. Detectors for high-energy particles and radiation are used in many areas of science, especially particle physics and nuclear physics experiments, nuclear medicine, cosmic ray measurements, space sciences and geological exploration. This second edition includes all the latest developments in detector technology, including several new chapters covering micro-strip gas chambers, silicion strip detectors and CCDs, scintillating fibers, shower detectors using noble liquid gases, and compensating calorimeters for hadronic showers. This well-illustrated textbook contains examples from the many areas in science in which these detectors are used. It provides both a coursebook for students in physics, and a useful introduction for researchers in other fields. |
|
|
Noble Gas Detectors $230 This book discusses the physical properties of noble fluids, operational principles of detectors based on these media, and the best technical solutions to the design of these detectors. Essential attention is given to detector technology: purification methods and monitoring of purity, information readout methods, electronics, detection of hard ultra-violet light emission, selection of materials, cryogenics etc. The book is mostly addressed to physicists and graduate students involved in the preparation of fundamental next generation experiments, nuclear engineers developing instrumentation for national nuclear security and for monitoring nuclear materials. |
|
|
Homojunction and Quantum-Well Infrared Detectors $167.04 ISBN-13: 9780125330213 ISBN-10: 0125330219 Title: Homojunction and Quantum-Well Infrared Detectors. Author: . |
|
|
Selected Papers on Photon-Counting Detectors $154.58 ISBN-13: 9780819427885 ISBN-10: 0819427888 Title: Selected Papers on Photon-Counting Detectors. Author: . |
