

Look up!

Sentience
to Wave


Sentience 
A theory of consciousness needs to explain how a set of neurobiological processes can cause a system to be in a subjective state of sentience or awareness. This phenomenon is unlike anything else in biology, and in a sense it is one of the most amazing features of nature. We resist accepting subjectivity as a ground floor, irreducible phenomenon of nature because, since the seventeenth century, we have come to believe that science must be objective. But this involves a pun on the notion of objectivity. We are confusing the epistemic objectivity of scientific investigation with the ontological objectivity of the typical subject matter in science in disciplines such as physics and chemistry. Since science aims at objectivity in the epistemic sense that we seek truths that are not dependent on the particular point of view of this or that investigator, it has been tempting to conclude that the reality investigated by science must be objective in the sense of existing independently of the experiences in the human individual. But this last feature, ontological objectivity, is not an essential trait of science. If science is supposed to give an account of how the world works and if subjective states of consciousness are part of the world, then we should seek an (epistemically) objective account of an (ontologically) subjective reality, the reality of subjective states of consciousness. What I am arguing here is that we can have an epistemically objective science of a domain that is ontologically subjective. Searle


Spacetime 
We will try to visualize the state of things by the graphic method. Let x, y, z be rectangular coordinates for space, and let t denote time. The objects of our perception invariably include places and times in combination. Nobody has ever noticed a place except at a time, or a time except at a place. [...] The multiplicity of all thinkable x, y, z, t systems of values we will christen the world. Minkowski
[So]
few and far between are the occasions for forming notions whose
specializations make up a continuous manifold,
that the only simple notions whose specializations form a multiply
extended manifold are the positions of perceived objects and colors.
Riemann
The characteristic of an
ndimensional manifold
is that each of the elements composing it (in our examples,
single points,
conditions of a gas, colors, tones) may be specified by the
giving of n
quantities,
the "coordinates," which are continuous functions within the
manifold.
§
We said at an earlier place, that
every difference
in experience must be founded on a difference of the objective conditions; we can now add: in
such a difference
of the objective conditions as is invariant with regard to
coordinate transformations,
a difference that cannot be made to vanish by a mere
change of the coordinate
system used.
Weyl


Symmetry 
It is increasingly clear that the symmetry group of nature is the deepest thing that we understand about nature today. Weinberg
The two
great events in twentieth
century physics are the rise of relativity theory
and
of quantum mechanics. Is there also some connection
between
quantum mechanics and symmetry? Yes indeed. Symmetry
plays
a great role in ordering the atomic and molecularspectra,
for the understanding of which the principles of
quantum
mechanics provide the key.
Weyl


Synapse 

Tensor 
Tensors, defined mathematically, are simply arrays of numbers, or functions, that transform according to certain rules under a change of coordinates. In physics, tensors characterize the properties of a physical system, as is best illustrated by giving some examples. A tensor may be defined at a single point or collection of isolated points of space (or spacetime), or it may be defined over a continuum of points. In the latter case, the elements of the tensor are functions of position and the tensor forms what is called a tensor field. This just means that the tensor is defined at every point within a region of space (or spacetime), rather than just at a point, or collection of isolated points. 

Vector 
The second principle of color mixing of lights is this: any color at all can be made from three different colors, in our case, red, green, and blue lights. By suitably mixing the three together we can make anything at all, as we demonstrated ... Further, these laws are very interesting mathematically. For those who are interested in the mathematics of the thing, it turns out as follows. Suppose that we take our three colors, which were red, green, and blue, but label them A, B, and C, and call them our primary colors. Then any color could be made by certain amounts of these three: say an amount a of color A, an amount b of color B, and an amount c of color C makes X: Now suppose another color Y is made from the same three colors: Then it turns out that the mixture of the two lights (it is one of the consequences of the laws that we have already mentioned) is obtained by taking the sum of the components of X and Y: A field
is simply a quantity defined at every point
throughout some region of space and time. ('t Hooft) 

Vision 
So
long
as we adhere to
the conventional notions of mind and matter, we are condemned to a view
of perception which is miraculous. We suppose that a physical process
starts from a visible object, travels to the eye, there changes into
another physical process, causes yet another physical process in the
optic nerve, and finally produces some effect in the brain,
simultaneously with which we see the object from which the process
started, the seeing being something "mental", totally different from
the physical processes which precede and accompany it. This view is so
queer that metaphysicians have invented all sorts of theories designed
to substitute something less incredible.
Russell Weyl 

Wave 
To
monochromatic light corresponds in the acoustic domain the simple tone.
Out of different kinds of monochromatic light composite light may be
mixed, just as tones combine to a composite sound. This takes place by
superposing simple oscillations of different frequency with definite
intensities.
Weyl
When a state is formed by the superposition of two other states, it will have properties that are in some vague way intermediate between those of the original states and that approach more or less closely to those of either of them according to the greater or less 'weight' attached to this state in the superposition process. The new state is completely defined by the two original states when their relative weights in the superposition process are known, together with a certain phase difference, the exact meaning of weights and phases being provided in the general case by the mathematical theory. When a state is formed by the superposition of two other states, it will have properties that are in some vague way intermediate between those of the original states and that approach more or less closely to those of either of them according to the greater or less 'weight' attached to this state in the superposition process. The new state is completely defined by the two original states when their relative weights in the superposition process are known, together with a certain phase difference, the exact meaning of weights and phases being provided in the general case by the mathematical theory. 
