How are homogeneity or heterogeneity of materials decided?
How is the homogeneity or heterogeneity of materials decided? What kind of measurement or assessment exists for inferring when e.g. the density of the material of an object is uniform across the object?
View ArticleManaging nuclear waste [closed]
Suppose you are trying to dispose of used uranium fuel rods. Once they are cooled and contained in zirconium pods, how would one try and send those pods to the earths core? This is all hypothetical. I...
View ArticleSeparation by density
How can i separate water vapour from a mixture of gases given that water vapour has a lower density than the gases? I am doing an experiment on separating water vapour from exhaust gases. I have not...
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The float on a frozen lake
We have a bit of a debate going on at work. If a basketball (or any round float – let’s assume one firm enough to not change size with temperature) was floating on a lake, and overnight the lake froze,...
View ArticleAfter turning census block data into a raster, how do I redistribute the...
I plan on rasterizing (terminology?) census block data relating to density to a regular 30 m by 30 m grid for use with NLCD data. I then hope to distribute the density of the original census block...
View ArticleHow to measure the mass of the lower part of a human body?
An Olympic weightlifter asked me this question and it has been bugging me for a couple of days now. Suppose “lower part” is defined as anything below and including the hip. This means that the majority...
View ArticleHow is refractive index related to the density of a medium (for example, air)?
I have a question regarding refractive index dependency on the density of a dielectric, specifically air. Background Let us start from Newton’s second law form of driven harmonic oscillators...
View ArticleChanging the Density of a liquid while its surface tension is constant
I’m working on Plateau-Rayleigh waves and I want to investigate the effect of density of the liquid on the wavelength of these waves How can I change the density of the liquid while its surface tension...
View ArticleHow does the gravitational field behave inside a star?
The interior gravitational field of a star with constant density is given by...
View ArticleQuestion relating to the critical density in Cosmology [closed]
So, I have just had a question relating to the critical density: Q.) What is the critical density and is this a constant? My answer is as follows: The critical density is not a constant. The critical...
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