Laser-doppler vibrometers can be used to get a better understanding of inner ear biomechanics, as these instruments are high sensitive sensors and do not affect the specimen in any way.

Scientists have now demonstrated it in action using light; by shining an CO 2 laser through a negative-index material, they were able to demonstrate an inverse Doppler effect, in which the laser ...

The frequencies of the two laser beams are Doppler shifted for point P, which moves at velocity v through the intersection point of the two laser beams. The downstream beam is frequency shifted up and ...

Laser vibrometry or more specific laser Doppler vibrometry is a precision optical measurement technology used for determining vibrational velocity and displacement at a fixed point. The laser Doppler ...

A project at NIST has now demonstrated an alternative laser-based technique, and reported the results in acoustics journal JASA Express Letters. The new method involves scanning laser Doppler ...

“Recognizing home activities can help computers better understand human behaviours and needs, with the hope of developing a better human-machine interface,” says team member and information scientist ...

Non-invasive, laser doppler system detects skin cancer 21 Aug 2015 UK-Italian partnership accurately detects malignant melanomas without need for a biopsy. Revealed: Intra-lesion micro-vessels. Skin ...

The change in pitch of a passing car engine is a classic example of the translational Doppler effect, but rotational Doppler shifts can also arise, as shown for circularly polarized light passing ...