ATAR Notes: Forum

VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Physics => Topic started by: NeedAspirin on September 18, 2011, 06:25:05 pm

Title: About wavelengths?
Post by: NeedAspirin on September 18, 2011, 06:25:05 pm: Is it shorter wavelengths travel faster or longer wavelengths?
Title: Re: About wavelengths?
Post by: Lasercookie on September 18, 2011, 06:36:48 pm: The velocity is dependent on two variables, frequency and wavelength - not wavelength alone.
$v=f\lambda$
Title: Re: About wavelengths?
Post by: tony3272 on September 18, 2011, 06:46:04 pm: The speed of sound under particular conditions is constant. That means that if wavelength increases, the frequency will decrease in order for speed to remain constant.

$f$ is proportional to $\frac{1}{\lambda }$
Title: Re: About wavelengths?
Post by: NeedAspirin on September 18, 2011, 06:50:30 pm: what about in optical fibres?
like single mode fibres, multimode fibres (step-index/graded index)