New Technology

Macro photography

Macro photography makes a small subject, such as an image of a human eye on a liquid crystal display (LCD) screen, appear life-size or greater. A special camera lens with a powerful magnification lets the photographer focus from just inches away. Macro photography can reveal details that are very difficult, or impossible, to make out with the naked eye. Some Scientists also attach cameras to microscopes to capture object in even greater detail, this technique is called photomicrography.

Doppler radar

This imaging technique helps meteorologists to track storms, tornadoes and even hurricanes; and it can even measure an objects speed and direction. A transmitter on the radar sends out a barrage of radio waves into the sky, and these travel at the speed of light, which is pretty fast. They reach the target, which is usually the droplets of water in clouds, and then they bounce. When the waves come back to the radar a computer calculates the milliseconds it takes and then calculates how far the water droplets are which. The radar can also figure out how much water a cloud contains from the strength of the reflected radio wave. This system creates a detailed picture of weather events in the area which is found useful.

Ultrasound

Ultrasound is a medical imaging technique often used to check a baby’s development in its mother’s womb. A probe is placed on the skin above the womb, and it sends out millions of pulses of high-frequency sound waves, at least 100 times greater than those within the range of human hearing. These pulses go into the womb and then bounce back. By measuring the time it takes for the echoes to return to the probe, a detailed image is produced on the screen of the machine. This imaging technique is similar to the Doppler radar. To produce 3D images, many scans of the body are taken and combined by a computer to create a 3D image.

Magnetic Resonance Imaging

MRI allows doctors to explore the body’s structures, such as the brain’s network of nerve connections. An MRI scanner bombards the body with radio waves that cause vibrations in atoms held in position, by the scanners powerful magnets. These tiny movements produce the information for a computer to build up a very detailed 3D image. MRI helps doctors diagnose serious conditions, and provides clues about the workings of the human body.

This entry was posted on Sunday, May 24th, 2009 at 1:06 pm and is filed under Uncategorized. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.