PUZZLE #5560: Spectral Glass Cipher (diff 4)
A glass filter doped with rare-earth elements, 7 columns. Each character absorbs at a specific wavelength on a 5nm grid. Identify absorption dips and read characters in wavelength order.
DATA
| Difficulty |
4
|
| N Cols |
7
|
| Linewidth Nm |
2.5
|
| Spectrum |
[400.0, 1.0], [400.75, 1.0], [401.5, 1.0], [402.26, 0.9802], [403.01, 0.9856], [403.76, 0.9768], [404.51, 0.9559], [405.26, 0.9033], [406.02, 0.8492], [406.77, 0.7496], [407.52, 0.6625], [408.27, 0.5508], [409.02, 0.4615], [409.77, 0.3833], [410.53, 0.3483], [411.28, 0.3302], [412.03, 0.3385], [412.78, 0.3436], [413.53, 0.3177], [414.29, 0.3413], [415.04, 0.3777], [415.79, 0.4407], [416.54, 0.5323], [417.29, 0.6234], [418.05, 0.7357], [418.8, 0.8235], [419.55, 0.8922], [420.3, 0.9472], [421.05, 0.9558], [421.8, 0.9847], [422.56, 0.983], [423.31, 1.0], [424.06, 1.0], [424.81, 1.0], [425.56, 1.0], [426.32, 0.9972], [427.07, 1.0], [427.82, 0.9946], [428.57, 1.0], [429.32, 0.9964], [430.08, 0.9965], [430.83, 1.0], [431.58, 1.0], [432.33, 1.0], [433.08, 0.996], [433.83, 0.9898], [434.59, 1.0], [435.34, 0.9905], [436.09, 0.998], [436.84, 0.998], [437.59, 0.993], [438.35, 0.9847], [439.1, 0.9708], [439.85, 0.9321], [440.6, 0.889], [441.35, 0.816], [442.11, 0.6989], [442.86, 0.6176], [443.61, 0.5233], [444.36, 0.4572], [445.11, 0.444], [445.86, 0.4779], [446.62, 0.5508], [447.37, 0.6476], [448.12, 0.7559], [448.87, 0.8352], [449.62, 0.901], [450.38, 0.9467], [451.13, 0.9617], [451.88, 1.0], [452.63, 0.99], [453.38, 0.9972], [454.14, 1.0], [454.89, 0.9868], [455.64, 1.0], [456.39, 1.0], [457.14, 0.9902], [457.89, 0.9994], [458.65, 0.9979], [459.4, 0.9932], [460.15, 1.0], [460.9, 0.9828], [461.65, 1.0], [462.41, 1.0], [463.16, 1.0], [463.91, 0.9968], [464.66, 0.9838], [465.41, 0.9957], [466.17, 1.0], [466.92, 0.9944], [467.67, 1.0], [468.42, 0.9912], [469.17, 1.0], [469.92, 1.0], [470.68, 0.9928], [471.43, 1.0], [472.18, 1.0], [472.93, 0.9796], [473.68, 0.9786], [474.44, 0.9622], [475.19, 0.9192], [475.94, 0.8519], [476.69, 0.7781], [477.44, 0.6706], [478.2, 0.5739], [478.95, 0.4888], [479.7, 0.4579], [480.45, 0.4601], [481.2, 0.5178], [481.95, 0.5833], [482.71, 0.697], [483.46, 0.805], [484.21, 0.874], [484.96, 0.9294], [485.71, 0.9476], [486.47, 0.9722], [487.22, 0.9873], [487.97, 0.9897], [488.72, 0.9685], [489.47, 0.9598], [490.23, 0.9301], [490.98, 0.8509], [491.73, 0.7602], [492.48, 0.6778], [493.23, 0.5553], [493.98, 0.481], [494.74, 0.3882], [495.49, 0.35], [496.24, 0.3386], [496.99, 0.3468], [497.74, 0.327], [498.5, 0.3075], [499.25, 0.2956], [500.0, 0.3084], [500.75, 0.3], [501.5, 0.3092], [502.26, 0.3264], [503.01, 0.3378], [503.76, 0.3284], [504.51, 0.3659], [505.26, 0.3837], [506.02, 0.4652], [506.77, 0.5598], [507.52, 0.654], [508.27, 0.774], [509.02, 0.8518], [509.77, 0.921], [510.53, 0.957], [511.28, 0.9801], [512.03, 0.9909], [512.78, 1.0], [513.53, 1.0], [514.29, 1.0], [515.04, 1.0], [515.79, 0.9955], [516.54, 0.9968], [517.29, 1.0], [518.05, 1.0], [518.8, 1.0], [519.55, 0.9909], [520.3, 1.0], [521.05, 0.994], [521.8, 1.0], [522.56, 1.0], [523.31, 0.9987], [524.06, 1.0], [524.81, 0.9977], [525.56, 1.0], [526.32, 0.9982], [527.07, 0.9935], [527.82, 1.0], [528.57, 0.9934], [529.32, 1.0], [530.08, 0.9913], [530.83, 1.0], [531.58, 0.9978], [532.33, 0.9969], [533.08, 0.9865], [533.83, 0.9937], [534.59, 1.0], [535.34, 1.0], [536.09, 0.9897], [536.84, 1.0], [537.59, 1.0], [538.35, 0.9894], [539.1, 1.0], [539.85, 0.9886], [540.6, 0.9923], [541.35, 1.0], [542.11, 1.0], [542.86, 1.0], [543.61, 0.9944], [544.36, 1.0], [545.11, 1.0], [545.86, 0.9887], [546.62, 1.0], [547.37, 1.0], [548.12, 0.9957], [548.87, 1.0], [549.62, 1.0], [550.38, 0.99], [551.13, 0.9926], [551.88, 0.993], [552.63, 1.0], [553.38, 1.0], [554.14, 0.9975], [554.89, 0.9954], [555.64, 0.9947], [556.39, 1.0], [557.14, 1.0], [557.89, 0.9942], [558.65, 0.983], [559.4, 1.0], [560.15, 0.9842], [560.9, 0.9928], [561.65, 0.995], [562.41, 0.9969], [563.16, 1.0], [563.91, 0.9969], [564.66, 1.0], [565.41, 1.0], [566.17, 0.9862], [566.92, 1.0], [567.67, 1.0], [568.42, 1.0], [569.17, 0.9991], [569.92, 0.9897], [570.68, 0.9859], [571.43, 1.0], [572.18, 0.9941], [572.93, 0.9955], [573.68, 1.0], [574.44, 0.994], [575.19, 0.993], [575.94, 0.9875], [576.69, 1.0], [577.44, 1.0], [578.2, 0.9895], [578.95, 0.9885], [579.7, 0.9984], [580.45, 0.9976], [581.2, 1.0], [581.95, 0.9916], [582.71, 0.9991], [583.46, 0.9983], [584.21, 0.997], [584.96, 0.9889], [585.71, 1.0], [586.47, 1.0], [587.22, 1.0], [587.97, 1.0], [588.72, 1.0], [589.47, 0.9916], [590.23, 0.9937], [590.98, 1.0], [591.73, 0.9966], [592.48, 1.0], [593.23, 0.9998], [593.98, 0.9999], [594.74, 1.0], [595.49, 1.0], [596.24, 1.0], [596.99, 1.0], [597.74, 0.9936], [598.5, 1.0], [599.25, 0.9948], [600.0, 1.0], [600.75, 0.9961], [601.5, 0.9941], [602.26, 1.0], [603.01, 0.9925], [603.76, 0.9989], [604.51, 0.9977], [605.26, 1.0], [606.02, 1.0], [606.77, 1.0], [607.52, 0.9967], [608.27, 0.9986], [609.02, 0.9897], [609.77, 0.9834], [610.53, 0.9961], [611.28, 1.0], [612.03, 0.99], [612.78, 1.0], [613.53, 0.9875], [614.29, 0.9893], [615.04, 1.0], [615.79, 0.9946], [616.54, 0.9995], [617.29, 1.0], [618.05, 1.0], [618.8, 1.0], [619.55, 0.9975], [620.3, 1.0], [621.05, 0.9993], [621.8, 0.9972], [622.56, 1.0], [623.31, 1.0], [624.06, 0.9895], [624.81, 0.9976], [625.56, 0.9939], [626.32, 1.0], [627.07, 1.0], [627.82, 0.9939], [628.57, 1.0], [629.32, 0.99], [630.08, 0.9938], [630.83, 1.0], [631.58, 0.9999], [632.33, 0.9943], [633.08, 1.0], [633.83, 1.0], [634.59, 0.9881], [635.34, 1.0], [636.09, 0.9989], [636.84, 1.0], [637.59, 1.0], [638.35, 1.0], [639.1, 0.9923], [639.85, 1.0], [640.6, 1.0], [641.35, 1.0], [642.11, 0.9901], [642.86, 1.0], [643.61, 1.0], [644.36, 1.0], [645.11, 1.0], [645.86, 1.0], [646.62, 1.0], [647.37, 0.9942], [648.12, 1.0], [648.87, 1.0], [649.62, 1.0], [650.38, 1.0], [651.13, 1.0], [651.88, 1.0], [652.63, 1.0], [653.38, 0.9935], [654.14, 0.9959], [654.89, 1.0], [655.64, 1.0], [656.39, 0.9918], [657.14, 0.9944], [657.89, 1.0], [658.65, 0.9962], [659.4, 1.0], [660.15, 0.9858], [660.9, 0.9966], [661.65, 0.9943], [662.41, 1.0], [663.16, 1.0], [663.91, 0.9958], [664.66, 0.9992], [665.41, 1.0], [666.17, 1.0], [666.92, 1.0], [667.67, 1.0], [668.42, 0.9958], [669.17, 0.9996], [669.92, 1.0], [670.68, 0.9967], [671.43, 0.9912], [672.18, 0.9963], [672.93, 1.0], [673.68, 1.0], [674.44, 1.0], [675.19, 1.0], [675.94, 1.0], [676.69, 1.0], [677.44, 0.9993], [678.2, 0.9994], [678.95, 0.9875], [679.7, 1.0], [680.45, 1.0], [681.2, 1.0], [681.95, 0.9981], [682.71, 1.0], [683.46, 0.9874], [684.21, 1.0], [684.96, 0.9983], [685.71, 0.9945], [686.47, 0.9901], [687.22, 1.0], [687.97, 1.0], [688.72, 0.999], [689.47, 0.998], [690.23, 0.9835], [690.98, 0.9997], [691.73, 1.0], [692.48, 1.0], [693.23, 0.9998], [693.98, 1.0], [694.74, 1.0], [695.49, 1.0], [696.24, 1.0], [696.99, 1.0], [697.74, 0.9976], [698.5, 1.0], [699.25, 0.9904], [700.0, 1.0]
|
| Detected Dips |
[411.4192, 0.3302], [413.5474, 0.3177], [444.9452, 0.444], [480.0252, 0.4579], [496.3012, 0.3386], [499.2363, 0.2956], [503.5353, 0.3284]
|
| 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: Pool fill: spectral-glass diff 4
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