ANA WIZ LTD How Fetal Dopplers Work

[ Home ] [ Up ] [ Shop ] [ Terms & Conds ] [ Search ] [ View Basket ] [ Checkout ] [ Contact Us ] [ Login ]

How Fetal Dopplers Work

All orders despatched within 24 Hrs. To order by phone, Tel: +44 (0)1932 228827

Ana Wiz Ltd | Home Use | Fetal Doppler Info | How Fetal Dopplers Work

How Fetal Dopplers Work
Fetal doppler technology is based on the Doppler shift principle. This theory was first discovered by Christian Doppler an Austrian physicist in 1842. Doppler discovered that sound waves from a moving source would be compressed or expanded, or that the frequency would change.

Dopplers work on the principle of listening to reflections of small, high frequency sound waves (ultrasound). These ultrasound waves are generated by microscopic vibrations of pizeoelectric crystals. When the waves are reflected from moving objects, such as a foetal heart the frequency changes slightly. It is this change that is analysed by the electronics of the doppler and converted into a sound that you can hear or a digital display of the heart rate.

Ana Wiz Ltd | Home Use | Fetal Doppler Info | How Fetal Dopplers Work

Best Sellers

New Products