What is the difference between a mixing medium and a primer?
They both do the same thing right? Mixing medium is more expensive though for some reason!
Suggestion by Metal Barbie
Mixing medium is well, a mixing medium so you can mix your own shades of makeup.
Primer is somethign you apply before applying your makeup.
You wouldn’t mix your foundation with your primer to create your own shade, so I would say no, they are not the same thing.
Add your own answer in the comments!
What natural medium/media can you use to propagate sound?
if not any medium from nature, what can you use for sound propagation that is cheap.
or any suggestion on how to optimize the sounds in a church, like what shape and materials to use.
Suggestion by ItsMe
Sound propagates through a media with or without distortion. The nature of the material determines how much distortion will occur. Most sound is propagated with some distortion (it’s impossible to propagate it with no distortion – but this is due mostly becuase of the types of media available in the world – most have incongruencies – which cause distortion).
I’ll assume you want propagation it with no/minimal distortion. To do that, you need to use a medium (matter, material) with very few internal fractures or heterogeneities. For example, rocks (a large slab of uniform rock) – such as a large piece of homogeneous marble or slate will transfer sound fairly well. However, if it’s too thin (e.g. applied on the floor or wall), if could also resonate in a perpendicular (planar) direction causing unwanted vibrations or bass effects. Or if it has visible/internal “veins” or discolorations, the more of those the more distortion will occur. Such “veins” are actually another material that’s filled into internal fractures – thus creating discontinuities in the material’s composition.
The physics of it deals with having a single solid piece of material that has a uniform/exact crystal lattice structure for its internal atoms/molecules. Ideally, the material should be composed of a single element (e.g. Fe, “Iron”) to make the internal lattice even more uniform and easier to construct.
For example, an ideal semi-natural material would be a single solid piece of iron, like an I-beam. However, it’s rare for an I-beam to exist in nature (that’s why I called it “semi-natural”), and also even I-beams have some internal fractures/discontinuities though small or minimal. It depends on the quality and process controls used to manufacture them. This is also why, when you hit an I-beam, it resonates and the sound goes through its entire length so easily – it’s a great carrier of sound and it doesn’t distort it much. Though, if you could find iron in a perfectly block shape (without the upper/lower “tabs” present on the I-beam), this would be even better and more efficient (distortion-free).
Another natural material that would be good – but difficult to create and maintain – is a large solid piece of ice made from pure water, that’s been formed/annealed to prevent internal fractures.
You could even use a metal tube, such as a copper pipe – this is similar to how mechanical organs work. However, if the pipe is used to transfer/propagate multiple frequencies, it will not be ideal since only some frequencies will be efficiently transmitted and others won’t (based on the diameter of the pipe, its wall thickness, and the density/volume of air present within the tube).
Out of these, a large homogeneous iron block/bar should be easiest to find and install in a church.
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