Choose one of the following and describe how a magnetic field helps it to perform its function:
• MRI
• Precipitator
• Particle accelerator
• maglev train
You may draw diagrams to support your written answer. Your answer should be no less than 5-6 sentences in length.
1 answer
One example where a magnetic field helps to perform its function is in an MRI (Magnetic Resonance Imaging) machine. The MRI machine uses powerful magnets to create a strong magnetic field that aligns the spins of hydrogen atoms in the body. When radio waves are then pulsed through the body, the hydrogen atoms are knocked out of alignment. As the atoms realign with the magnetic field, they release energy, which is detected by sensors in the MRI machine. The resulting signals are then used to generate detailed images of the internal structures of the body. The magnetic field is essential for this process to work effectively and provide accurate imaging.