Here's the question:
which part of the electromagnetic spectrum has a refractive index of 1.45 in glass?
I've attempted to tackle it with
v = frequency x wavelength
and
refractive index = light speed in vacuum / light speed in material
but without success...
Help appreciated
John
Formulas won't help answering this question. There are some types of fused-quartz-based glass with a refractive index of 1.45 in the VISIBLE spectrum. Glass does not transmit most other parts of the EM spectrum. Howeverm glass transmits in parts of the near infrared, but with an index of less than 1.4 in most cases. It transmits in the NEAR portion of the ultraviolet with an index of 1.5 to 1.6, depending upon the glass type.
To find the part of the electromagnetic spectrum with a refractive index of 1.45 in glass, you need to consider the specific type of glass and the corresponding wavelength range it can transmit.
Glass is transparent to visible light, which falls within a certain range of wavelengths. The refractive index of glass can vary depending on the type, but for many common glasses, it typically ranges from around 1.4 to 1.6 for visible light.
In this case, a refractive index of 1.45 indicates that the glass is suitable for transmitting light in the visible spectrum. Remember that refractive index is a property that describes the change in speed of light as it moves from one medium (such as vacuum) to another (such as glass). A refractive index of 1.45 suggests that light travels 1.45 times slower in glass compared to a vacuum.
It's important to note that glass does not transmit all parts of the electromagnetic spectrum equally. While it is transparent to visible light, it absorbs or reflects most other wavelengths. For example, glass is not transparent to ultraviolet (UV) light or infrared (IR) light in general. However, there are specific types of glass, such as fused-quartz-based glass, that can transmit certain parts of the UV and IR spectrum.
To summarize, the part of the electromagnetic spectrum with a refractive index of 1.45 in glass typically corresponds to the visible light range.