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PROGRAMMABLE METAMATERIALS. “In this way, many fascinating effects have already been demonstrated and explained such as non-radiating anapole effect, directional scattering, cloaking and invisibility effects.” https://lnkd.in/e5fJZNfb View in LinkedIn

NANOSCALE PROPERTIES. “As soon as the meta-atoms are usually sufficiently smaller than the wavelength, the scattered field can be well described by only the electric (ED) and magnetic (MD) dipoles that makes it extremely helpful to interpret and predict the optical properties of single meta-atoms and their ensembles.” https://lnkd.in/e5fJZNfb View in LinkedIn

MAGNETIC POLARIZATION. “In the scattered field domain, the meta-atoms can be considered as effective point scatterers with specific polarizabilities corresponding to its dominant multipole moments.” https://lnkd.in/e5fJZNfb View in LinkedIn

DEFINITION. “Multipole moments are the coefficients of a series expansion of a potential due to continuous or discrete sources (e.g., an electric charge distribution). All atoms and molecules (except S-state atoms) have one or more non-vanishing permanent multipole moments.” https://lnkd.in/eZKMH75i View in LinkedIn

PHOTONS + META-ATOMS. “One of the most powerful tool for such an analysis is the multipolar expansion method. Within this method, the electromagnetic field inside and outside the scatterer of an arbitrary shape is described by a superposition of vector spherical harmonics (VSHs) forming a complete set of basis functions known as multipoles.” https://lnkd.in/e5fJZNfb View in LinkedIn

DEFINITION. “Metamaterials are artificial structures with unusual and superior properties that come from their carefully designed building blocks -- also called meta-atoms.” (Programmable matter). https://lnkd.in/eD7iFAGi View in LinkedIn

THE TATTERED HUMAN PSYCHE. “Darwin seems to me to be the Copernicus of the organic world. In the sixteenth century Copernicus put an end to the anthropocentric theory by doing away with the Ptolemaic spheres and bringing our earth down to the rank of an insignificant planet.” (du Bois-Reymond, 1882). https://lnkd.in/e2_HpJsY View in LinkedIn

PARADIGM CHANGE. “Niels Bohr’s 1913 atomic model was a revolutionary step in a development which culminated in the mid-1920s with the theory of quantum mechanics. Ever since then, physicists and philosophers have been discussing what the theory means for our understanding of the world.” https://lnkd.in/eauD5rnp View in LinkedIn

SO ENDS this first of two weekends on a consideration of some of Bohr’s ideas about quantum reality. It has been over 100 years since these ideas were introduced, and humanity is still struggling over them. “Opposites are not contradictory but complementary.” (Bohr) sums up how we humans have such deeply embedded and inflexible frames of reference that make understanding the quantum world so difficult. https://lnkd.in/eauD5rnp View in LinkedIn

MEASUREMENT. “Bohr’s view of quantum mechanics has traditionally been seen as opposed to quantum fundamentalism, not least because he insisted on a classical (not quantum) description of the measurement apparatus. This amounts to dissolving the measurement problem from the outset, since the apparatus and its pointer should not be thought of as being in quantum superpositions.” https://lnkd.in/eauD5rnp View in LinkedIn