PUZZLE #2867: Spectral Glass Cipher (diff 3)
A glass filter doped with rare-earth elements, 6 columns. Each character absorbs at a specific wavelength on a 5nm grid. Identify absorption dips and read characters in wavelength order.
DATA
| Difficulty |
3
|
| N Cols |
6
|
| Linewidth Nm |
2.0
|
| Spectrum |
[400.0, 1.0], [400.75, 0.9985], [401.5, 1.0], [402.26, 0.9968], [403.01, 0.9993], [403.76, 0.9865], [404.51, 0.9847], [405.26, 0.962], [406.02, 0.9128], [406.77, 0.8396], [407.52, 0.7153], [408.27, 0.5785], [409.02, 0.457], [409.77, 0.3833], [410.53, 0.3655], [411.28, 0.3985], [412.03, 0.4357], [412.78, 0.4485], [413.53, 0.4106], [414.29, 0.3764], [415.04, 0.3763], [415.79, 0.4293], [416.54, 0.5468], [417.29, 0.694], [418.05, 0.8024], [418.8, 0.9004], [419.55, 0.9448], [420.3, 0.9799], [421.05, 0.9957], [421.8, 0.9969], [422.56, 1.0], [423.31, 0.9949], [424.06, 1.0], [424.81, 0.9944], [425.56, 0.9951], [426.32, 0.9983], [427.07, 0.9992], [427.82, 1.0], [428.57, 0.9926], [429.32, 1.0], [430.08, 0.9936], [430.83, 0.9985], [431.58, 1.0], [432.33, 1.0], [433.08, 1.0], [433.83, 0.9999], [434.59, 0.9967], [435.34, 1.0], [436.09, 1.0], [436.84, 0.9986], [437.59, 1.0], [438.35, 0.9873], [439.1, 0.9995], [439.85, 0.9858], [440.6, 0.9471], [441.35, 0.8855], [442.11, 0.7883], [442.86, 0.6608], [443.61, 0.5405], [444.36, 0.432], [445.11, 0.3975], [445.86, 0.4569], [446.62, 0.5634], [447.37, 0.7006], [448.12, 0.8163], [448.87, 0.9111], [449.62, 0.9634], [450.38, 0.9861], [451.13, 0.9914], [451.88, 1.0], [452.63, 1.0], [453.38, 0.9972], [454.14, 1.0], [454.89, 1.0], [455.64, 0.9977], [456.39, 0.9942], [457.14, 0.9932], [457.89, 0.9991], [458.65, 0.9957], [459.4, 1.0], [460.15, 0.9905], [460.9, 0.9978], [461.65, 1.0], [462.41, 1.0], [463.16, 0.9958], [463.91, 1.0], [464.66, 1.0], [465.41, 1.0], [466.17, 1.0], [466.92, 0.9946], [467.67, 0.9956], [468.42, 0.9983], [469.17, 0.9997], [469.92, 0.9981], [470.68, 0.9937], [471.43, 0.9989], [472.18, 0.9926], [472.93, 1.0], [473.68, 0.9994], [474.44, 0.9819], [475.19, 0.9645], [475.94, 0.9266], [476.69, 0.8395], [477.44, 0.7245], [478.2, 0.598], [478.95, 0.4701], [479.7, 0.4095], [480.45, 0.4053], [481.2, 0.494], [481.95, 0.6276], [482.71, 0.7656], [483.46, 0.8594], [484.21, 0.9349], [484.96, 0.9818], [485.71, 0.9839], [486.47, 0.991], [487.22, 0.9961], [487.97, 0.995], [488.72, 0.9907], [489.47, 0.9845], [490.23, 0.956], [490.98, 0.9163], [491.73, 0.8459], [492.48, 0.7323], [493.23, 0.5982], [493.98, 0.4623], [494.74, 0.383], [495.49, 0.3653], [496.24, 0.3978], [496.99, 0.4505], [497.74, 0.448], [498.5, 0.4177], [499.25, 0.3881], [500.0, 0.3727], [500.75, 0.4392], [501.5, 0.5408], [502.26, 0.6855], [503.01, 0.8032], [503.76, 0.8938], [504.51, 0.9503], [505.26, 0.9699], [506.02, 0.9918], [506.77, 1.0], [507.52, 1.0], [508.27, 0.9985], [509.02, 0.9954], [509.77, 0.9986], [510.53, 1.0], [511.28, 1.0], [512.03, 0.9943], [512.78, 0.9963], [513.53, 0.9895], [514.29, 1.0], [515.04, 1.0], [515.79, 0.9975], [516.54, 0.9993], [517.29, 1.0], [518.05, 1.0], [518.8, 1.0], [519.55, 1.0], [520.3, 1.0], [521.05, 0.993], [521.8, 0.9943], [522.56, 1.0], [523.31, 0.9973], [524.06, 1.0], [524.81, 1.0], [525.56, 1.0], [526.32, 0.9904], [527.07, 1.0], [527.82, 0.9977], [528.57, 1.0], [529.32, 1.0], [530.08, 0.9966], [530.83, 1.0], [531.58, 0.9977], [532.33, 0.9953], [533.08, 0.996], [533.83, 1.0], [534.59, 0.9992], [535.34, 0.9992], [536.09, 1.0], [536.84, 1.0], [537.59, 1.0], [538.35, 0.9997], [539.1, 1.0], [539.85, 0.9982], [540.6, 0.9952], [541.35, 1.0], [542.11, 0.9984], [542.86, 0.9957], [543.61, 0.9968], [544.36, 1.0], [545.11, 0.9987], [545.86, 1.0], [546.62, 0.9943], [547.37, 1.0], [548.12, 1.0], [548.87, 0.9942], [549.62, 0.999], [550.38, 1.0], [551.13, 1.0], [551.88, 1.0], [552.63, 0.9984], [553.38, 0.9939], [554.14, 1.0], [554.89, 0.9959], [555.64, 0.9995], [556.39, 0.997], [557.14, 0.9926], [557.89, 1.0], [558.65, 1.0], [559.4, 1.0], [560.15, 1.0], [560.9, 1.0], [561.65, 1.0], [562.41, 1.0], [563.16, 0.9963], [563.91, 1.0], [564.66, 1.0], [565.41, 1.0], [566.17, 1.0], [566.92, 1.0], [567.67, 1.0], [568.42, 0.9953], [569.17, 0.9985], [569.92, 1.0], [570.68, 1.0], [571.43, 0.9978], [572.18, 1.0], [572.93, 1.0], [573.68, 1.0], [574.44, 1.0], [575.19, 1.0], [575.94, 0.9923], [576.69, 1.0], [577.44, 1.0], [578.2, 1.0], [578.95, 1.0], [579.7, 1.0], [580.45, 0.9926], [581.2, 0.9964], [581.95, 0.996], [582.71, 1.0], [583.46, 1.0], [584.21, 1.0], [584.96, 1.0], [585.71, 0.9981], [586.47, 0.9978], [587.22, 0.9978], [587.97, 1.0], [588.72, 0.998], [589.47, 1.0], [590.23, 0.9978], [590.98, 0.9919], [591.73, 0.9955], [592.48, 1.0], [593.23, 0.9999], [593.98, 1.0], [594.74, 1.0], [595.49, 0.9974], [596.24, 0.9949], [596.99, 0.9961], [597.74, 0.9947], [598.5, 0.9944], [599.25, 0.9907], [600.0, 0.9998], [600.75, 0.9988], [601.5, 1.0], [602.26, 1.0], [603.01, 1.0], [603.76, 1.0], [604.51, 1.0], [605.26, 0.9947], [606.02, 0.9926], [606.77, 0.9999], [607.52, 0.9957], [608.27, 0.9995], [609.02, 1.0], [609.77, 0.9994], [610.53, 0.9977], [611.28, 1.0], [612.03, 1.0], [612.78, 0.9973], [613.53, 1.0], [614.29, 0.9968], [615.04, 1.0], [615.79, 0.9887], [616.54, 0.996], [617.29, 1.0], [618.05, 0.9897], [618.8, 0.9986], [619.55, 1.0], [620.3, 1.0], [621.05, 1.0], [621.8, 1.0], [622.56, 1.0], [623.31, 1.0], [624.06, 1.0], [624.81, 0.9938], [625.56, 0.9982], [626.32, 0.9909], [627.07, 0.9961], [627.82, 0.9905], [628.57, 0.9957], [629.32, 1.0], [630.08, 0.9971], [630.83, 1.0], [631.58, 0.9998], [632.33, 0.9979], [633.08, 0.9903], [633.83, 1.0], [634.59, 1.0], [635.34, 0.9929], [636.09, 0.9888], [636.84, 0.9848], [637.59, 1.0], [638.35, 1.0], [639.1, 1.0], [639.85, 1.0], [640.6, 1.0], [641.35, 0.9984], [642.11, 1.0], [642.86, 1.0], [643.61, 1.0], [644.36, 1.0], [645.11, 0.9968], [645.86, 1.0], [646.62, 0.9999], [647.37, 0.992], [648.12, 0.9912], [648.87, 1.0], [649.62, 1.0], [650.38, 1.0], [651.13, 0.9974], [651.88, 0.995], [652.63, 1.0], [653.38, 0.9953], [654.14, 1.0], [654.89, 0.9975], [655.64, 1.0], [656.39, 1.0], [657.14, 1.0], [657.89, 1.0], [658.65, 0.9964], [659.4, 1.0], [660.15, 1.0], [660.9, 0.9969], [661.65, 1.0], [662.41, 1.0], [663.16, 1.0], [663.91, 1.0], [664.66, 0.9979], [665.41, 0.9992], [666.17, 0.9997], [666.92, 0.9998], [667.67, 1.0], [668.42, 1.0], [669.17, 1.0], [669.92, 1.0], [670.68, 1.0], [671.43, 1.0], [672.18, 1.0], [672.93, 1.0], [673.68, 1.0], [674.44, 0.9937], [675.19, 1.0], [675.94, 1.0], [676.69, 0.9947], [677.44, 1.0], [678.2, 0.999], [678.95, 1.0], [679.7, 0.998], [680.45, 0.9926], [681.2, 0.999], [681.95, 1.0], [682.71, 0.9958], [683.46, 1.0], [684.21, 0.9992], [684.96, 0.9979], [685.71, 0.9947], [686.47, 0.9966], [687.22, 0.9962], [687.97, 0.9975], [688.72, 0.9952], [689.47, 1.0], [690.23, 1.0], [690.98, 1.0], [691.73, 1.0], [692.48, 0.996], [693.23, 0.9894], [693.98, 0.9966], [694.74, 1.0], [695.49, 0.9955], [696.24, 0.9985], [696.99, 1.0], [697.74, 1.0], [698.5, 0.9853], [699.25, 1.0], [700.0, 0.9996]
|
| Detected Dips |
[410.4163, 0.3655], [414.6664, 0.3763], [445.0106, 0.3975], [480.1089, 0.4053], [495.3794, 0.3653], [499.766, 0.3727]
|
| Grid Nm |
{
"base": 410.0,
"step": 5.0,
"n_positions": 36
}
|
| Reference |
{
"A": 410.0,
"B": 415.0,
"C": 420.0,
"D": 425.0,
"E": 430.0,
"F": 435.0,
"G": 440.0,
"H": 445.0,
"I": 450.0,
"J": 455.0,
"K": 460.0,
"L": 465.0,
"M": 470.0,
"N": 475.0,
"O": 480.0,
"P": 485.0,
"Q": 490.0,
"R": 495.0,
"S": 500.0,
"T": 505.0,
"U": 510.0,
"V": 515.0,
"W": 520.0,
"X": 525.0,
"Y": 530.0,
"Z": 535.0,
"0": 540.0,
"1": 545.0,
"2": 550.0,
"3": 555.0,
"4": 560.0,
"5": 565.0,
"6": 570.0,
"7": 575.0,
"8": 580.0,
"9": 585.0
}
|
| Hint |
Spectral absorption lines in doped glass filter. Match observed dips to the reference wavelength-to-character table. Wavelength grid: 410 nm base, 5.0 nm step per character.
|
| Answer Format |
single lowercase letter
|
author's note: Audited: spectral-glass diff 3
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