Farhat naz mphil ph environmental and occupational healthDrFarhat Naz
it contains bassic definition of noise vs sound, noise pollution, sources, factors affecting health whether human or animal, controlling measures of noise pollution, mitigation and legislation for noise pollution.
Farhat naz mphil ph environmental and occupational healthDrFarhat Naz
it contains bassic definition of noise vs sound, noise pollution, sources, factors affecting health whether human or animal, controlling measures of noise pollution, mitigation and legislation for noise pollution.
This slides tells about what are the consequences of noise;hearing loss and how it affects human being;protective devices for minimizing the risk level.
This slides tells about what are the consequences of noise;hearing loss and how it affects human being;protective devices for minimizing the risk level.
lecture 17 from a college level introduction to psychology course taught Fall 2011 by Brian J. Piper, Ph.D. (psy391@gmail.com) at Willamette University, includes anatomy of ear, sound localization
Individual dimensions of organizational behaviorAshutosh
This presentation will give an insight into individual dimensions of organizational behavior. it includes the concepts of perception, motivation and personality.
Perception is important for understanding individual differences because how people perceived a situation determines how people behave. Perception is part of that personal dimension that makes people see situations differently as well as shapes their attitude in terms of their work environment. This lesson seeks to help students:
1. describe the major elements of the perceptual process;
2. identify the main factors that influence what individual perceive; and
3. Identify factors that determine how one person perceives another.
Difference between ultrasonic and infrasonic sound.pdfTakshila Learning
Difference between ultrasonic and infrasonic sound A frequency of less than 20Hz is considered to be an infrasonic sound Infrasonic sounds have a frequency that is below the range of human hearing ability Ultrasonics are sounds that have a frequency greater than 20,000 hertz cycles per second
Though, noise is a controllable entity of the environment, on several occasions it is found to be uncontrollable and create severe impacts on life and induce unpleasant circumstances.
Noise pollution is a public nuisance to the environment.
6. Medical sonography ( ultrasonography ) is an ultrasound-based diagnostic medical imaging technique used to visualize muscles, tendons, and many internal organs, to capture their size, structure and any pathological lesions. Ultrasound has been used by radiologists and sonographers to image the human body for at least 50 years and has become one of the most widely used diagnostic tools in modern medicine. The technology is relatively inexpensive and portable. The creation of an image from sound is done in three steps - producing a sound wave, receiving echoes, and interpreting those echoes.
7. An inventor from Peterborough created a clever device to keep people safe from dog attacks. Richard Wylie (64) hopes the electronic ‘Dazer’ device will be used to safeguard people from dangerous animal attacks. The device emits an ultrasonic blast that is inaudible to humans but makes animals very uncomfortable– acting as a perfect defence if they become aggressive. “ The device helped to save my wife and son Dax from getting attacked by monkeys. “ We were up on the rock of Gibraltar and my wife was holding a banana. The monkeys crowded around them and were going wild. Luckily I had the Dazer and that sent them away.” f(dazer)=23,5 kHz,