figlib_u3_analysis samples (26)

{
 "kind": "chromatogram",
 "spots": [
  {
   "label": "A",
   "pos": 0.75
  },
  {
   "label": "B",
   "pos": 0.45
  },
  {
   "label": "C",
   "pos": 0.15
  }
 ],
 "stationaryLabel": "polar paper",
 "mobileLabel": "nonpolar solvent",
 "lineLabels": false,
 "alt": "A developed paper strip with spots A, B and C at decreasing heights; the paper is polar and the solvent moving up the strip is nonpolar."
}

{
 "kind": "chromatogram",
 "spots": [
  {
   "label": "A",
   "pos": 0.8
  },
  {
   "label": "B",
   "pos": 0.35
  }
 ],
 "alt": "A developed strip: the start line at the bottom, the solvent front near the top, spot A high on the strip and spot B lower down."
}

{
 "kind": "chromatogram",
 "spots": [
  {
   "label": "A",
   "pos": 0.8
  },
  {
   "label": "B",
   "pos": 0.3
  }
 ],
 "label": "ink X",
 "strip2": {
  "spots": [
   {
    "label": "A",
    "pos": 0.8
   },
   {
    "label": "C",
    "pos": 0.55
   }
  ],
  "label": "ink Y"
 },
 "alt": "Two developed strips side by side: ink X with spots A and B, ink Y with spots A and C."
}

{
 "kind": "chromatogram",
 "spots": [
  {
   "label": "A",
   "pos": 0.9
  },
  {
   "label": "B",
   "pos": 0.4
  }
 ],
 "flaw": "spot-above-front",
 "alt": "A developed strip with spot B partway up and spot A drawn above the solvent front line."
}

{
 "kind": "chromatogram",
 "spots": [
  {
   "label": "A",
   "pos": 0.9
  },
  {
   "label": "B",
   "pos": 0.4
  }
 ],
 "flaw": "spots-on-front-line",
 "alt": "A developed strip with both spots sitting on the solvent front line."
}

{
 "kind": "distillation",
 "mixture": "salt water",
 "collectLabel": "nearly pure water",
 "alt": "A distillation setup: a flask of salt water over heat, a sloping tube through a condenser, and a receiving flask collecting nearly pure water."
}

{
 "kind": "distillation",
 "mixture": "ethanol + water",
 "highlight": "vapor",
 "alt": "The distillation setup with the space above the boiling liquid circled to show where vapor forms."
}

{
 "kind": "distillation",
 "mixture": "ethanol + water",
 "highlight": "condense",
 "alt": "The distillation setup with the condenser circled to show where the vapor condenses back to liquid."
}

{
 "kind": "filtration",
 "mixture": "sand + salt water",
 "solidLabel": "sand stays",
 "liquidLabel": "salt water passes",
 "alt": "A funnel with filter paper over a flask: the sand and salt water mixture is poured in, the sand stays on the paper, the salt water passes into the flask."
}

{
 "kind": "wavecompare",
 "waves": [
  {
   "label": "one wave",
   "wavelength": 1.0
  }
 ],
 "alt": "A transverse wave on a baseline with the wavelength marked between two crests."
}

{
 "kind": "wavecompare",
 "waves": [
  {
   "label": "longer wavelength",
   "wavelength": 1.0
  },
  {
   "label": "shorter wavelength",
   "wavelength": 0.5
  }
 ],
 "alt": "Two transverse waves on parallel baselines: the top wave has twice the wavelength of the bottom wave; each wavelength is marked between crests."
}

{
 "kind": "wavecompare",
 "brackets": "first",
 "waves": [
  {
   "label": "wave P",
   "wavelength": 1.4
  },
  {
   "label": "wave Q",
   "wavelength": 0.7
  }
 ],
 "alt": "Two transverse waves; the top wave carries a wavelength bracket between two crests."
}

{
 "kind": "emspectrum",
 "annotate": "energy",
 "alt": "The electromagnetic spectrum regions in order from radio to gamma with an arrow showing the direction of increasing energy."
}

{
 "kind": "emspectrum",
 "annotate": "frequency",
 "highlight": [
  "infrared",
  "visible",
  "ultraviolet"
 ],
 "alt": "The electromagnetic spectrum regions in order with infrared, visible and ultraviolet outlined, and an arrow showing increasing frequency."
}

{
 "kind": "energyladder",
 "levels": 3,
 "spacing": "electronic",
 "levelLabels": [
  "E₁",
  "E₂",
  "E₃"
 ],
 "transition": {
  "from": 0,
  "to": 1
 },
 "photon": true,
 "arrowLabel": "absorption",
 "alt": "Three widely spaced electronic energy levels with an upward arrow from the lowest level and a photon squiggle arriving at the arrow."
}

{
 "kind": "energyladder",
 "levels": 4,
 "spacing": "vibrational",
 "alt": "Four vibrational energy levels with medium spacing."
}

{
 "kind": "energyladder",
 "levels": 4,
 "spacing": "rotational",
 "alt": "Four closely bunched rotational energy levels."
}

{
 "kind": "energyladder",
 "positions": [
  0,
  0.55,
  1.0
 ],
 "transition": {
  "from": 2,
  "to": 0
 },
 "photon": true,
 "arrowLabel": "emission",
 "alt": "Three energy levels at set heights with a downward arrow from the top level to the lowest and a photon squiggle leaving the arrow."
}

{
 "kind": "beerplot",
 "x": "concentration",
 "points": [
  0.2,
  0.45,
  0.7,
  0.9
 ],
 "alt": "Absorbance against concentration: a straight calibration line through the origin with four plotted standards."
}

{
 "kind": "beerplot",
 "x": "concentration",
 "points": [
  0.2,
  0.55,
  0.9
 ],
 "guides": {
  "pos": 0.55,
  "xLabel": "0.40 M",
  "yLabel": "0.32"
 },
 "alt": "The calibration line with dashed guides from the middle standard to an absorbance of 0.32 and a concentration of 0.40 molar."
}

{
 "kind": "beerplot",
 "x": "pathlength",
 "unknown": {
  "pos": 0.6,
  "yLabel": "0.45",
  "xLabel": "?"
 },
 "alt": "Absorbance against path length: a straight line through the origin, with an arrowed read from absorbance 0.45 across to the line and down to an unlabelled path length."
}

{
 "kind": "beerplot",
 "x": "concentration",
 "flaw": "not-through-origin",
 "alt": "Absorbance against concentration: a straight line that meets the absorbance axis above zero."
}

{
 "kind": "beerplot",
 "x": "concentration",
 "flaw": "curved",
 "alt": "Absorbance against concentration: a line through the origin that bends over instead of staying straight."
}

{
 "kind": "cuvette",
 "width": 1.0,
 "conc": 0.5,
 "exit": 0.5,
 "pathLabel": true,
 "alt": "Light of intensity I nought enters a cuvette of labelled path length, leaves weaker as I, and reaches a detector."
}

{
 "kind": "cuvette",
 "panels": [
  {
   "width": 0.7,
   "conc": 0.5,
   "exit": 0.8,
   "label": "shorter path"
  },
  {
   "width": 1.6,
   "conc": 0.5,
   "exit": 0.3,
   "label": "longer path"
  }
 ],
 "alt": "Two cuvettes of the same solution: the wider cuvette lets through a weaker exiting beam than the narrower one."
}

{
 "kind": "cuvette",
 "panels": [
  {
   "width": 1.0,
   "conc": 0.2,
   "exit": 0.85,
   "label": "dilute"
  },
  {
   "width": 1.0,
   "conc": 0.9,
   "exit": 0.25,
   "label": "concentrated"
  }
 ],
 "alt": "Two identical cuvettes: the darker, more concentrated solution lets through a weaker exiting beam than the dilute one."
}