#ernst mach

[electronicgallery]

"Self-Portrait" or "View from the Left Eye" by Ernst Mach

[lindahall]

Ernst Mach – Scientist of the Day

Ernst Mach, an Austrian physicist, was born Feb. 18, 1838, in Chilitz, Moravia, now part of the Czech Republic. He was educated at home until he was 14...

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[perkwunos]

Our physical and psychical views spring in exactly the same manner from instinctive knowledge. We read the thoughts of men in their acts and facial expressions without knowing how. Just as we predict the behavior of a magnetic needle placed near a current by imagining Ampère's swimmer in the current, similarly we predict in thought the acts and behavior of men by assuming sensations, feelings, and wills similar to our own connected with their bodies. What we here instinctively perform would appear to us as one of the subtlest achievements of science, far outstripping in significance and ingenuity Ampère's rule of the swimmer, were it not that every child unconsciously accomplished it. The question simply is, therefore, to grasp scientifically, that is, by conceptional thought, what we are already familiar with from other sources. And here much is to be accomplished. A long sequence of facts is to be disclosed between the physics of expression and movement and feeling and thought. We hear the question, "But how is it possible to explain feeling by the motions of the atoms of the brain?" Certainly this will never be done, no more than light or heat will ever be deduced from the law of refraction. We need not deplore, therefore, the lack of ingenious solutions of this question. The problem is not a problem. ... Let us look at the matter without bias. The world consists of colors, sounds, temperatures, pressures, spaces, times, and so forth, which now we shall not call sensations, nor phenomena, because in either term an arbitrary, one-sided theory is embodied, but simply elements. The fixing of the flux of these elements, whether mediately or immediately, is the real object of physical research. As long as, neglecting our own body, we employ ourselves with the interdependence of those groups of elements which, including men and animals, make up foreign bodies, we are physicists. For example, we investigate the change of the red color of a body as produced by a change of illumination. But the moment we consider the special influence on the red of the elements constituting our body, outlined by the well-known perspective with head invisible, we are at work in the domain of physiological psychology. We close our eyes, and the red together with the whole visible world disappears. There exists, thus, in the perspective field of every sense a portion which exercises on all the rest a different and more powerful influence than the rest upon one another. With this, however, all is said. In the light of this remark, we call all elements, in so far as we regard them as dependent on this special part (our body), sensations. That the world is our sensation, in this sense, cannot be questioned. ...

Ernst Mach, "On the Economical Nature of Physical Inquiry"

[guy60660]

Ernst Mach

[collectionarchive]

by Ernst Mach

Self-Portrait

(1886)

source: collectionarchive.tumblr.com

[tagitables]

My heart ! 🤍

[coltonwbrown]

Self-Portrait (1886) Ernst Mach

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[windudemon]

solution to the optical illusion question from earlier

this is called mach bands. earlier, i asked if you can see the illusion and you all failed (nerds without se! what to expect...) no, i couldn't either. i keep googling until i found some video finally explaining what the supposed illusion was.

so, between (1) and (2), it SEEMS like there's a one pixel border, darker than the (1) itself. but in reality there's no such thing and that's our brain/optic nerves and whatever else "enhancing the difference".

if you focus really hard, you can also "see", a one pixel border, lighter than the (2) itself.

so basically, our optic system makes the very edge of (1) darker and (2) lighter. kind of like comic outlining.

so i thought hey, istp should be the best type to see this with strong se and ti logical focus.

the whole thing, if you really focus, also can seem like "slightly plucked upwards" where the bands connect. so it's kind of like we are looking at this thing from above. but if we were to look from side then we would see something like this:

check out my main blog @ demonwindu.wordpress.com

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