The first speaker ever created was known as the dynamic loudspeaker. It was created in the 1920’s by Edward Kellogg and Chester Rice. The loudspeaker produces a magnetic field which then causes a coil or magnet to move. The coil or magnet is connected to the diaphragm. There are more speakers than just the horn‚ such as‚ such as‚ electrodynamic loudspeaker‚ flat panel - planar‚ electrostatic‚ multi-cell diaphragm and piezoelectric. Speakers are used to produce sound. Sound is an energy which is
Premium Sound Gramophone record Thomas Edison
In “What is an Inkblot? Some Say‚ Not Much” by Erica Goode‚ the author introduces the Rorschach test determining whether or not the Rorschach test is necessary. Some people argue about how the Rorschach is useful in ways to find out the problem or to find out what is wrong with the patient. Getting to the point‚ the story‚ “ Flowers of Algernon” by Daniel Keys‚ the author talks about a mentally disabled grown man named Charlie Gordon taking the Rorschach test to determine whether or not he is suitable
Premium Psychology Scientific method Science
210 Criminal Investigations November 20th‚ 2012 1. What are methods of inquiry and how are they used in criminal investigation? A method of inquiry must be based on gathering observable practical evidence subject to reasoning. The method of inquiry must be used to reconstruct the past. Methods of inquiry used in criminal investigation are who‚ what‚ when‚ where‚ why‚ and how for example who is the victim or suspect‚ what is or was the problem‚ when the crime took place‚ where it took place
Premium Scientific method Police Critical thinking
Methods of Analysis Carly Ayers ACC 281 Accounting Concepts for Health Care Professionals Professor Beverly Bulliner January 21‚ 2013 Methods of Analysis One of the main components of accounting is the accurate analysis and reporting of data gathered. While the purpose of accounting is to provide information needed for businesses to make decisions‚ it is important to know the intended user‚ and the decisions which are being made. “Because of the diversity of users‚ their different levels
Premium Balance sheet
hundreds of millions of years ago. That is before the dinosaurs. Fossils fuels were formed in the Carboniferous Period. The Carboniferous Period occurred about 300 million years ago. In this period our Earth was covered in a swampy plant life. Lots of algae and big leafy plants covered the earth. When these plants died at the bottom of these swamps and lakes ‚they formed something called peat. Then new rock was formed on top of the peat called sedimentary rock. Layers and layers of new earth
Premium Coal Fossil fuel Petroleum
Research Methods by Comparison Information John Distler HR 301Research Paper 02/21/2014 Professor Gilbert Abstract Humans seek out solutions all the time and in order to find solutions some kind of research must be done. Research is defined as “a detailed study of a subject‚ especially in order to discover (new) information or reach a (new) understanding.” (Polonsky and Waller 2011) When most people think of conducting research they think it is done for educational
Premium Scientific method Qualitative research Quantitative research
Psychology AS Psychology (AQA‚ A) Research Methods Workbook Name …… Stella Akinwumi……………………………………... Section 1 - Quantitative and qualitative research methods Research methods are the ways that psychologists investigate a theory. Different methods will be appropriate for different topics/theories/situations. Quantitative = Quantitative research gathers data in numerical form which can be put into categories‚ or in rank order
Premium Hypothesis Null hypothesis Scientific method
1) Application Form Application form is a form that fills in by the applicant when applying for a job. This is a basic procedure for the organization to recruit or select employees. Both IT project manager and telemarketing executive are suit for this application form in selection method. For the selection method‚ application form is easier and fast for the organization to scan the information of applicants and make comparisons. Inside the application form there are included some basic personal
Free Standardized test Psychometrics Aptitude
‘stuttering’ group actually had a stuttering problem. The non-stuttering group were given positive speech therapy‚ praising how well and fluent they spoke‚ while the other group received negative speech therapy‚ criticised for every single imperfection and told they were stutterers. By the end of the experiment the children who before had had no problems with their speech now did‚ and 3 of the 5 children who already had stutters were considerably worse. The reasons that this experiment is deemed unethical
Premium Addiction Drug addiction
The nations were categorized as either Central Powers or Allies--the Central Powers included Bulgaria‚ the Ottoman Empire‚ Austria-Hungary‚ and Germany‚ while the Allies involved the other stated regions above. The war was caused by numerous underlying reasons: the fight for more land and security over each other‚ propaganda directed toward opponents‚ thus resulting in a rise of tension‚ and the money spent on armaments. The battle for land‚ resources‚ and security‚ in my opinion‚ was the most detrimental
Premium