Guinness World Records 2013 Honorees Include Tallest Cat, Tallest Dog And Tallest Donkey. This is a bittersweet time for Debby Maraspini. The 2013 edition of Guinness World Records just came out and her beloved cat, Savannah Islands Trouble -- Trouble for short -- is in the book as the tallest cat ever, with a height of 19 inches.
Refraction is the change in direction of waves that occurs when waves travel from one medium to another. Refraction is always accompanied by a wavelength and speed change. Diffraction is the bending of waves around obstacles and openings. The amount of diffraction increases with increasing wavelength.
Refraction of Sound Waves. Refraction of waves involves a change in the direction of waves as they pass from one medium to another. Refraction, or bending of the path of the waves, is accompanied by a change in speed and wavelength of the waves.So if the media (or its properties) are changed, the speed of the wave is changed.efraction of waves involves a change in the direction of waves as they pass from one medium to another. Refraction, or bending of the path of the waves, is accompanied by a change in speed and wavelength of the waves. So if the media (or its properties) are changed, the speed of the wave is changed.