Visual explorations

24 visual explorations · 12 historical cases.

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44 results · showing 24

From folded chains to a network. Coarse chain markers stand for portions of protein, not atoms. Stages are selected illustrations, not a molecular trajectory, thermometer or cooking-time prediction. — Schematic projection

Kitchen & food

Protein networks

Protein shape, new contacts and the difference between temperature and texture.

pH versus Fraction of dissolved inorganic carbon. The three carbon forms sum to the prescribed total. A positive saturation index permits a thermodynamic drive toward calcite precipitation; it gives no rate. The authored starting account is CaCl₂ plus NaHCO₃. NaOH or HCl bookkeeping closes the charge balance at the prescribed pH; added volume is neglected. This is not a measured water sample. — Calculated curves

Water & oceans

Carbonate balance

Follow dissolved carbon through chemical forms, pH and an ideal saturation calculation.

Deposited coordinates

Life & living systems

Inside a zinc enzyme

Inspect deposited carbonic-anhydrase coordinates and separate structure from catalytic evidence.

Repeating planes and a diffraction condition. Illustrative plane spacing; this is not a measured mineral pattern. One angle cannot identify a mineral. Intensities, atomic basis, texture and peak widths are omitted. — Schematic projection

Earth & minerals

Planes & diffraction

Connect repeating planes, scattered waves and the need for complementary mineral evidence.

Schematic projection

Buildings & infrastructure

Pores & transport

Explore pore transport, binder chemistry and the assumptions behind a diffusion profile.

Slip changes the arrangement. A simple array illustrates relative slip across a plane. It is not an iron crystal structure, a computed dislocation core, a stress calculation or a measured micrograph. — Schematic projection

Metals & manufacturing

Slip in a metal

Follow a schematic slip event and distinguish atomic order, defects and mechanical evidence.

Connectivity without a property shortcut. Markers are chain segments, not atoms. Authored crosslinks illustrate connectivity, not a specific epoxy formulation, conversion, bond chemistry or quantitative stiffness. — Schematic projection

Polymers & soft materials

Chains & crosslinks

Compare chain connectivity and explore why chemistry, topology and temperature all matter.

Fuel-cell reaction and flow account. H₂/O₂ PEM reaction; 100% Faradaic accounting. 1.229 V is the standard reversible liquid-water value at 25 °C. Assumed voltage loss is not a measured polarization curve. Consumed flow differs from supplied flow. — Schematic projection

Energy & reactions

Inside a fuel cell

Track protons, electrons and balanced reactants, then calculate an ideal flow and power account.

Vacuum wavelength (nm) versus Energy (eV). A photon at or above the chosen band gap satisfies the simple energy comparison. That does not mean every such photon is absorbed or collected as a useful electrical signal. — Calculated curves

Information & light

Photons & band gaps

Link wavelength, photon energy and an ideal threshold while separating eligibility from detection.

Three kinds of evidence used in the clear-sample investigation. — Complementary observations

Measurement & discovery

Three clear samples

Choose complementary measurements, eliminate candidates and learn when ambiguity should remain.

Air wavelength (nm) versus Synthetic spectral density (arbitrary units/nm). Broadening spreads the same modeled line area across more wavelengths. The peak can become lower while the integrated area stays fixed. Resolving this reference pair would support a line comparison, not determine a mineral, abundance or biological origin. — Calculated curves

Planets & exploration

Resolve a rover-style signal

Resolve a synthetic sodium doublet and distinguish elemental evidence from mineral and life claims.

Vacuum wavelength (nm) versus Spectral radiance (W m⁻² sr⁻¹ nm⁻¹). Use the normalized view to compare shape and the fixed radiance scale to compare brightness. Hotter ideal emitters peak at shorter wavelengths and emit more at every wavelength. A thermal shape alone cannot establish elemental composition. — Calculated curves

Stars & the cosmos

Thermal light & temperature

Explore Planck spectra, wavelength conventions and the limits of a blackbody account of starlight.

Planck reference curve at the published FIRAS wavenumbers. Open the exploration for observations, uncertainties and residuals. — 2.725 K reference model

Stars & the cosmos

The cosmic background spectrum

Examine NASA’s published FIRAS spectrum, uncertainty bars and a reference-relative model comparison.

Was access to air enough to make organisms appear in heated broth? — Historical evidence sequence

Fe · Si

Evidence that changed the explanation

Weigh observations in twelve historical investigations, from everyday materials to the composition of stars.

Water orientation around ions. Original qualitative representations, not a molecular trajectory. Sizes, separation and solvent count are authored; three displayed waters do not establish a hydration number. Lattice connectors are neighbor guides. Concentration is calculated separately from amount and volume. — Schematic projection

Water & oceans

Ions, water and a changing concentration

Connect ionic structure, water, dilution and the evidence in an electrical signal.

Separated reactions, connected paths. Original species ledger in schematic compartments, not measured particle positions, concentration or reaction kinetics. Nitrate half-cell counterions and a KNO₃ bridge are chosen to make charge balance explicit. Hydration, interfaces and the external wire are omitted from 3D; the companion diagram identifies the transport routes. — Schematic projection

Energy & reactions

Follow the charge, account for the atoms

Follow zinc and copper through balanced reactions, charge transport and voltage evidence.

Carbon-14 · nuclear inventory. Arbitrary nucleon count markers, not nuclear shape, size, internal positions or a binding-energy calculation. Electrons are omitted. The separate decay model describes a hypothetical isotope, not the selected real nuclide. — Schematic projection

Stars & the cosmos

Nuclear identity and the passage of time

Distinguish cosmic production, isotope identity and the limits of a radioactive clock.

1A3N · heme and its iron site. RCSB PDB 1A3N, X-ray resolution 1.80 Å. Selected deposited coordinates and biological assembly operators; atom display sizes are exaggerated. Cα connectors indicate sequence continuity, not direct Cα–Cα bonds. Heme connectors use a distance heuristic, not a bond-order assignment. Missing residues are not reconstructed. Oxy/deoxy views are separately centered, not aligned or morphed. — Deposited heme coordinates

Fe · Si

Follow a structure inward

Move from cell to heme, or silicon switch to a local lattice site.

Robert Bunsen and Gustav Kirchhoff identified cesium in 1860 and rubidium in 1861 through spectroscopy. — Historical evidence sequence

Ga · Al

How an element became known

Test the evidence behind spectroscopy, gallium and aluminum.

Inside a silicon switch. Original idealized long-channel nMOS cutaway. Geometry, material colors, doping profiles and layer thicknesses are illustrative. Exploding the layers is a viewing aid, not a fabrication process. It omits leakage, short-channel effects and detailed electrostatics. — Schematic projection

Si · Cu

Why these materials?

Inspect five material systems and connect chemical form to useful function.

Graphite · connected sheets. Idealized crystal fragment. Spheres and spacing are schematic; cropped boundary sites have fewer displayed neighbors than interior sites. — Schematic projection

Same element, different material

Compare graphite and diamond, then connect the idea to silicon.

A biconcave red blood cell. Original schematic of a healthy mature human red blood cell. Shape and color are illustrative. About 8 µm across is a representative size, not a measurement of this drawn cell. No molecular positions or counts are implied. — Schematic projection

Life & living systems

Follow matter through life

Account for carbon in a leaf and follow oxygen delivery.

Terbium · an activator in a host. Conceptual phosphor schematic, not a specific crystal structure, measured spectrum, or atomistic emission simulation. Color is an explanatory cue; host sites and concentration are illustrative. — Schematic projection

Turn an input into an effect

Explore light emission and motion in two terbium-containing materials.

Selected iron environment. RCSB PDB 1A3N, X-ray resolution 1.80 Å. Selected deposited coordinates and biological assembly operators; atom display sizes are exaggerated. Cα connectors indicate sequence continuity, not direct Cα–Cα bonds. Heme connectors use a distance heuristic, not a bond-order assignment. Missing residues are not reconstructed. Oxy/deoxy views are separately centered, not aligned or morphed. Only Fe, porphyrin N and deposited OXY atoms are shown. The proximal histidine ligand is omitted. Fe–N distances are atom-center separations, not atom diameters. — Deposited iron-site coordinates

Measurement & discovery

Read the evidence in light

Compare spectral patterns and trace the evidence behind a protein model.

Follow the history, people & applications →

Element inquiries retain their named chemical forms. Realm filters apply only where a realm has been curated. Read the review status.

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