Subjects were recruited from an outpatient department of cardiovascular division at the Taipei Veteran General Hospital between September 2007 and November 2009. All subjects had signed a consent form ...

Considering that arterial stiffness and subsequent increases in wave reflection precede hypertension, 15, 16 it is plausible that the effect of wave reflection on early stages of LV diastolic ...

Add Yahoo as a preferred source to see more of our stories on Google. For more than 50 years, scientists theorized that an electromagnetic wave could be reflected temporally—not just spatially.

A ripple tank can be used to investigate the frequency close frequencyThe number of waves produced each second. The unit of frequency is hertz (Hz)., wavelength close wavelengthThe length of a single ...

NEW YORK, March 13, 2023 — When we look in a mirror, we are used to seeing our faces looking back at us. The reflected images are produced by electromagnetic light waves bouncing off of the mirrored ...

Time reflections, or spatial reflections, occur when "electromagnetic radiation in the form of light or sound waves hit a mirror or wall, respectively," resulting in a reflection, like a mirror image ...

The effects of solar activity on the stratospheric waveguides and downward reflection of planetary waves during NH early to midwinter are examined. Under high solar (HS) conditions, enhanced westerly ...

Researchers have developed new metasurfaces for the arbitrary manipulation of reflected waves, essentially breaking classical reflection law to engineer it at will. In our daily lives, we can find ...