Tools

Interactive widgets that accompany articles on scienceabc.com.

• Famous People IQ Lookup

  Searchable database of documented and estimated IQ scores, with side-by-side comparison.

• USB Connector Identifier

  Visual gallery of every USB connector type, with a transfer-speed calculator and a charger compatibility checker.

• Electric Shock Calculator

  Pick a voltage (from AA battery to lightning) and see what current it would drive through your body — then look up what each milliamp range actually does.

• Reactivity Explorer

  An interactive periodic table heat-mapped by reactivity. Compare any two elements, see the metal and nonmetal trends, and find the top 10 most reactive elements.

• Dinosaur Size Comparator

  Pick any two or three theropods (and Argentinosaurus for scale shock) and see their silhouettes side by side at true real-world scale, with a human for reference.

• The Sun's Life Timeline

  Drag a scrubber through 4.6 billion years of past and ~7.7 billion years of future to see what the Sun looked like, looks like, and will look like — and what happens to Earth at every step.

• First Life on Earth Timeline

  Scrub from Earth's molten birth 4.54 billion years ago to today through ten life-on-Earth milestones — first oceans, LUCA, the oldest fossils, the Great Oxidation, eukaryotes, the Boring Billion, and the Cambrian explosion.

• Soil Horizon Explorer

  Tap any layer of a soil profile to see its depth, color, composition, and biology — then switch between forest, grassland, desert, tundra, and tropical biomes to see how soils change with climate.

• Electron Shell Explorer

  Click any element on the periodic table and watch its electrons fill the K, L, M shells. See the valence shell highlighted, the octet status, and switch between Bohr diagram, shell notation (2, 8, 8, 18), and full Aufbau orbital configuration.

• Post-mortem Timeline

  Scrub the slider through the first 72 hours after death to see when pallor, algor, livor, and rigor mortis appear, peak, and fade. A separate comparison view puts the four mortises side by side.

• Cell Division Explorer

  Step through every phase of mitosis, meiosis I, and meiosis II with animated chromosome diagrams. A side-by-side comparator highlights the differences, and a reverse "find a phase" lookup answers questions like "when do sister chromatids separate?"

• pH Scale Explorer

  Drag a marker along a pH scale that extends from −3 to 17, with real substances pinned at their actual values — including the superacids and superbases that live outside the conventional 0–14 range. Compare any two substances and see how many times more acidic one is than the other.

• Throat Anatomy Explorer

  Tap any labeled part of the throat — pharynx, epiglottis, trachea, esophagus — to learn what it does. Switch between breathing and swallowing modes to see how the epiglottis flips to keep food out of your airway.

• 360° Circle Explorer

  Pick any angle from 0° to 360° and see it instantly as degrees, a fraction of a turn, radians, DMS, and sin·cos. Drag the slider, type a value, enter a fraction, or click a preset.

• Planet Rotation Explorer

  Tap any planet (Mercury through Neptune) to see which way it spins, its axial tilt, and the length of its day. The two retrograde oddballs — Venus and Uranus — are flagged, and a sortable reference table puts all eight side by side.