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Does MRI uses a magnetic field rather than an x-ray to produce an image?
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How are image produced?
Magnetic field
What does a magnet do in the television?
Usually there is no ferrous magnet within the TV - i.e a permenant magnet. Rather a solenoid is used to generate a changing magnetic field. Simply put, the magnetic field is used to focus the cathode ray that creates the image on your television's screen.
What produces an image with the electron microscope?
A magnetic field focuses he electrons
What is magnetic resonance inaging used for?
Magnetic resonance imaging or MRI is commonly used in the medical field. This technique can be used to produce a detailed image of almost any part of the human body, assisting greatly with diagnosis.
Is the earths magnetic field constant throghout?
No, the Earth's Magnetic Field acts just like a BAR Magnetic. It has a North and South Pole and its magnetic lines of its force field are more tightly 'compressed' near the Poles than at the Equator. See the image below for an example, or Google "magnetic field lines".
What brain imaging method uses radio waves and magnetic fields to produce a detailed image?
Electro-Magnetic imaging
What is the list for the characteristics of a magnetic field produced by a current?
A magnetic field is a change in energy within a volume of space. A magnetograph can be created by placing a piece of paper over a magnet and sprinkling the paper with iron filings. The particles align themselves with the lines of magnetic force produced by the magnet. The magnetic lines of force show where the magnetic field exits the material at one pole and reenters the material at another pole along the length of the magnet. It should be noted that the magnetic lines of force exist in three dimensions but are only seen in two dimensions in the image.
What will happen when the magnetic field of two or more magnets overlap?
Refer to the link below to see an image of two attracting ball magnets.
What does depth of field mean?
depths of Field means The range of distance along the axis of an optical instrument which the object will produce a relatively distinct image
Can plane and convex mirrors produce real image?
no it does not produce real image . it produce virtual and erect image
What type of image does a plane image produce?
Plane mirrors produce a virtual image.
Can you use non magnetically shielded speakers next to a plasma tv?
Yes, you will be fine. It was a problem with old CRT TVs as they used a magnetic field to direct the electrons to the screen. Another magnetic field from speakers could change the direction of the electrons and alter the image at the edges. A plasma TV uses a completely different process to create the image and so speakers nearby will not be a problem.
