Talk:Mass attenuation coefficient

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E 1%??[edit]

In creating this article, I deleted the following paragraph:

Another measure of the extinction coefficient is E 1% which gives the mass extinction coefficient. E1% is the absorbance of a 1% solution by mass and has the units g^-1L cm^-1^{[citation needed]}

Followed by these commented-out notes:

Absorbances should be unitless. Removed sentence: "One can convert between ε and E1% using the following equation: ε=(E1%*molecular weight)." Used to have a "/10", until it was removed without edit summary; no way to tell which is correct with unit confusion.

If anyone can figure out what's correct and put it in, that would be great!

Mass thickness[edit]

An important parameter used in the literature (e.g. electron microscopy) is the "mass thickness" (kg per square meter). That was introduced here, but ommitted by later edits. I think this parameter deserves inclusion in this article.Esem0 (talk) 23:36, 21 March 2018 (UTC)[reply]

mass energy absorption coefficient[edit]

It seems that X-ray absorption gives two graphs, one is the mass attenuation coefficient (this article), the other is the mass energy absorption coefficient. Seems to me that the latter should be ether mentioned here (with a redirect) or have its own article. Gah4 (talk) 18:02, 27 October 2020 (UTC)[reply]

Why lambda[edit]

Using lambda for area density is very confusing, since lambda is conventionally wavelength in optics. I notice that lambda is not mentioned as a symbol for area density in the actual area density article. Geoffrey.landis (talk) 16:16, 17 February 2022 (UTC)[reply]

There are only so many letters. Theoretically, one can use all Unicode letters, but many look similar. Lambda is common for attenuation. One that I just thought of now, and you can see in the article, is the Beer–Lambert law. Note the similarity between Lambert and lambda. That might be the closest to actual WP:OR that I have ever done, though. Gah4 (talk) 21:31, 17 February 2022 (UTC)[reply]