Aorta Iliac Ultrasound. Ultrasound can be used to image the aorta and iliac arteries to detect medical conditions affecting blood flow. Ultrasound technology is safe and images arteries and veins. There is no radiation or injection of chemicals for this study.
This is the infection called acute otitis media. The build up of pressurized pus in the middle ear causes earache, swelling, and redness. Since the eardrum cannot vibrate properly, you or your child may have hearing problems. Sometimes the eardrum ruptures, and pus drains out of the ear.
Viktor is a Most Viewed Writer in. Physics. If you could somehow make your eardrums sensitive to changes in the electromagnetic field, then yes, you could easily hear radio waves in the 20Hz - 20kHz range. But your eardrums are not sensitive to changes in the electromagnetic field. So regardless of frequency, your ears are completely blind to radio waves. What your eardrums do sense are changes in air pressure, to which they respond mechanically. These changes in air pressure are what we call sound.