A nanometer is an incredibly small unit of length in the metric system, representing one billionth of a meter (1 nm = 1 x 10^-9 meters). To put it into perspective, if a human hair were as wide as the Earth, a nanometer would be about the size of a marble. This unit is essential in fields like nanotechnology and biology, where it measures atomic and molecular structures.
Historically, scientists have delved into the nanometer scale to manipulate materials at the atomic level, leading to groundbreaking innovations such as quantum dots and targeted drug delivery systems. Interestingly, the wavelength of visible light ranges from about 400 to 700 nanometers, which is why nanotechnology can manipulate light for applications like creating more vivid screen displays.
The US Survey Foot might seem like an unassuming unit, but it’s steeped in the very history of American land measurement. Unlike the International Foot, which is precisely defined as 0.3048 meters, the US Survey Foot is ever-so-slightly longer at approximately 0.3048006 meters. This minuscule difference stems from surveying practices established in the early 19th century and has historically been used for mapping and property delineation across the United States. Integral to the country’s westward expansion, the US Survey Foot played a pivotal role in the division and sale of public lands—underscoring its foundational impact on both real estate and infrastructure.
Despite its historical significance, the US Survey Foot was officially deprecated at the end of 2022, as the US moves towards a unified use of the International Foot for federal geodetic surveys. This transition simplifies engineering and scientific calculations, streamlining US standards with global practices. The legacy of the US Survey Foot, however, serves as a fascinating footnote in the story of American land development, marking an era when precise measurements charted the course of a growing nation.
| Nanometers | US Survey Feet |
|---|---|
0
nm
|
0
ft-us
|
10000
nm
|
3.28083e-5
ft-us
|
20000
nm
|
6.56167e-5
ft-us
|
30000
nm
|
0.000098425
ft-us
|
40000
nm
|
0.000131233
ft-us
|
50000
nm
|
0.000164042
ft-us
|
60000
nm
|
0.00019685
ft-us
|
70000
nm
|
0.000229658
ft-us
|
80000
nm
|
0.000262467
ft-us
|
90000
nm
|
0.000295275
ft-us
|
100000
nm
|
0.000328083
ft-us
|
110000
nm
|
0.000360892
ft-us
|
120000
nm
|
0.0003937
ft-us
|
130000
nm
|
0.000426508
ft-us
|
140000
nm
|
0.000459317
ft-us
|
150000
nm
|
0.000492125
ft-us
|
160000
nm
|
0.000524933
ft-us
|
170000
nm
|
0.000557742
ft-us
|
180000
nm
|
0.00059055
ft-us
|
190000
nm
|
0.000623358
ft-us
|
200000
nm
|
0.000656167
ft-us
|
210000
nm
|
0.000688975
ft-us
|
220000
nm
|
0.000721783
ft-us
|
230000
nm
|
0.000754592
ft-us
|
240000
nm
|
0.0007874
ft-us
|
250000
nm
|
0.000820208
ft-us
|
260000
nm
|
0.000853017
ft-us
|
270000
nm
|
0.000885825
ft-us
|
280000
nm
|
0.000918633
ft-us
|
290000
nm
|
0.000951442
ft-us
|
300000
nm
|
0.00098425
ft-us
|
310000
nm
|
0.00101706
ft-us
|
320000
nm
|
0.00104987
ft-us
|
330000
nm
|
0.00108268
ft-us
|
340000
nm
|
0.00111548
ft-us
|
350000
nm
|
0.00114829
ft-us
|
360000
nm
|
0.0011811
ft-us
|
370000
nm
|
0.00121391
ft-us
|
380000
nm
|
0.00124672
ft-us
|
390000
nm
|
0.00127953
ft-us
|
400000
nm
|
0.00131233
ft-us
|
410000
nm
|
0.00134514
ft-us
|
420000
nm
|
0.00137795
ft-us
|
430000
nm
|
0.00141076
ft-us
|
440000
nm
|
0.00144357
ft-us
|
450000
nm
|
0.00147638
ft-us
|
460000
nm
|
0.00150918
ft-us
|
470000
nm
|
0.00154199
ft-us
|
480000
nm
|
0.0015748
ft-us
|
490000
nm
|
0.00160761
ft-us
|
500000
nm
|
0.00164042
ft-us
|
510000
nm
|
0.00167323
ft-us
|
520000
nm
|
0.00170603
ft-us
|
530000
nm
|
0.00173884
ft-us
|
540000
nm
|
0.00177165
ft-us
|
550000
nm
|
0.00180446
ft-us
|
560000
nm
|
0.00183727
ft-us
|
570000
nm
|
0.00187008
ft-us
|
580000
nm
|
0.00190288
ft-us
|
590000
nm
|
0.00193569
ft-us
|
600000
nm
|
0.0019685
ft-us
|
610000
nm
|
0.00200131
ft-us
|
620000
nm
|
0.00203412
ft-us
|
630000
nm
|
0.00206693
ft-us
|
640000
nm
|
0.00209973
ft-us
|
650000
nm
|
0.00213254
ft-us
|
660000
nm
|
0.00216535
ft-us
|
670000
nm
|
0.00219816
ft-us
|
680000
nm
|
0.00223097
ft-us
|
690000
nm
|
0.00226378
ft-us
|
700000
nm
|
0.00229658
ft-us
|
710000
nm
|
0.00232939
ft-us
|
720000
nm
|
0.0023622
ft-us
|
730000
nm
|
0.00239501
ft-us
|
740000
nm
|
0.00242782
ft-us
|
750000
nm
|
0.00246063
ft-us
|
760000
nm
|
0.00249343
ft-us
|
770000
nm
|
0.00252624
ft-us
|
780000
nm
|
0.00255905
ft-us
|
790000
nm
|
0.00259186
ft-us
|
800000
nm
|
0.00262467
ft-us
|
810000
nm
|
0.00265748
ft-us
|
820000
nm
|
0.00269028
ft-us
|
830000
nm
|
0.00272309
ft-us
|
840000
nm
|
0.0027559
ft-us
|
850000
nm
|
0.00278871
ft-us
|
860000
nm
|
0.00282152
ft-us
|
870000
nm
|
0.00285433
ft-us
|
880000
nm
|
0.00288713
ft-us
|
890000
nm
|
0.00291994
ft-us
|
900000
nm
|
0.00295275
ft-us
|
910000
nm
|
0.00298556
ft-us
|
920000
nm
|
0.00301837
ft-us
|
930000
nm
|
0.00305118
ft-us
|
940000
nm
|
0.00308398
ft-us
|
950000
nm
|
0.00311679
ft-us
|
960000
nm
|
0.0031496
ft-us
|
970000
nm
|
0.00318241
ft-us
|
980000
nm
|
0.00321522
ft-us
|
990000
nm
|
0.00324803
ft-us
|
1000000
nm
|
0.00328083
ft-us
|
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