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.
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.
| US Survey Feet | Nanometers |
|---|---|
0
ft-us
|
0
nm
|
1
ft-us
|
3.04801e+8
nm
|
2
ft-us
|
6.09601e+8
nm
|
3
ft-us
|
9.14402e+8
nm
|
4
ft-us
|
1.2192e+9
nm
|
5
ft-us
|
1.524e+9
nm
|
6
ft-us
|
1.8288e+9
nm
|
7
ft-us
|
2.1336e+9
nm
|
8
ft-us
|
2.4384e+9
nm
|
9
ft-us
|
2.74321e+9
nm
|
10
ft-us
|
3.04801e+9
nm
|
11
ft-us
|
3.35281e+9
nm
|
12
ft-us
|
3.65761e+9
nm
|
13
ft-us
|
3.96241e+9
nm
|
14
ft-us
|
4.26721e+9
nm
|
15
ft-us
|
4.57201e+9
nm
|
16
ft-us
|
4.87681e+9
nm
|
17
ft-us
|
5.18161e+9
nm
|
18
ft-us
|
5.48641e+9
nm
|
19
ft-us
|
5.79121e+9
nm
|
20
ft-us
|
6.09601e+9
nm
|
21
ft-us
|
6.40081e+9
nm
|
22
ft-us
|
6.70561e+9
nm
|
23
ft-us
|
7.01041e+9
nm
|
24
ft-us
|
7.31521e+9
nm
|
25
ft-us
|
7.62001e+9
nm
|
26
ft-us
|
7.92482e+9
nm
|
27
ft-us
|
8.22962e+9
nm
|
28
ft-us
|
8.53442e+9
nm
|
29
ft-us
|
8.83922e+9
nm
|
30
ft-us
|
9.14402e+9
nm
|
31
ft-us
|
9.44882e+9
nm
|
32
ft-us
|
9.75362e+9
nm
|
33
ft-us
|
1.00584e+10
nm
|
34
ft-us
|
1.03632e+10
nm
|
35
ft-us
|
1.0668e+10
nm
|
36
ft-us
|
1.09728e+10
nm
|
37
ft-us
|
1.12776e+10
nm
|
38
ft-us
|
1.15824e+10
nm
|
39
ft-us
|
1.18872e+10
nm
|
40
ft-us
|
1.2192e+10
nm
|
41
ft-us
|
1.24968e+10
nm
|
42
ft-us
|
1.28016e+10
nm
|
43
ft-us
|
1.31064e+10
nm
|
44
ft-us
|
1.34112e+10
nm
|
45
ft-us
|
1.3716e+10
nm
|
46
ft-us
|
1.40208e+10
nm
|
47
ft-us
|
1.43256e+10
nm
|
48
ft-us
|
1.46304e+10
nm
|
49
ft-us
|
1.49352e+10
nm
|
50
ft-us
|
1.524e+10
nm
|
51
ft-us
|
1.55448e+10
nm
|
52
ft-us
|
1.58496e+10
nm
|
53
ft-us
|
1.61544e+10
nm
|
54
ft-us
|
1.64592e+10
nm
|
55
ft-us
|
1.6764e+10
nm
|
56
ft-us
|
1.70688e+10
nm
|
57
ft-us
|
1.73736e+10
nm
|
58
ft-us
|
1.76784e+10
nm
|
59
ft-us
|
1.79832e+10
nm
|
60
ft-us
|
1.8288e+10
nm
|
61
ft-us
|
1.85928e+10
nm
|
62
ft-us
|
1.88976e+10
nm
|
63
ft-us
|
1.92024e+10
nm
|
64
ft-us
|
1.95072e+10
nm
|
65
ft-us
|
1.9812e+10
nm
|
66
ft-us
|
2.01168e+10
nm
|
67
ft-us
|
2.04216e+10
nm
|
68
ft-us
|
2.07264e+10
nm
|
69
ft-us
|
2.10312e+10
nm
|
70
ft-us
|
2.1336e+10
nm
|
71
ft-us
|
2.16408e+10
nm
|
72
ft-us
|
2.19456e+10
nm
|
73
ft-us
|
2.22504e+10
nm
|
74
ft-us
|
2.25552e+10
nm
|
75
ft-us
|
2.286e+10
nm
|
76
ft-us
|
2.31648e+10
nm
|
77
ft-us
|
2.34696e+10
nm
|
78
ft-us
|
2.37744e+10
nm
|
79
ft-us
|
2.40792e+10
nm
|
80
ft-us
|
2.4384e+10
nm
|
81
ft-us
|
2.46888e+10
nm
|
82
ft-us
|
2.49936e+10
nm
|
83
ft-us
|
2.52984e+10
nm
|
84
ft-us
|
2.56033e+10
nm
|
85
ft-us
|
2.59081e+10
nm
|
86
ft-us
|
2.62129e+10
nm
|
87
ft-us
|
2.65177e+10
nm
|
88
ft-us
|
2.68225e+10
nm
|
89
ft-us
|
2.71273e+10
nm
|
90
ft-us
|
2.74321e+10
nm
|
91
ft-us
|
2.77369e+10
nm
|
92
ft-us
|
2.80417e+10
nm
|
93
ft-us
|
2.83465e+10
nm
|
94
ft-us
|
2.86513e+10
nm
|
95
ft-us
|
2.89561e+10
nm
|
96
ft-us
|
2.92609e+10
nm
|
97
ft-us
|
2.95657e+10
nm
|
98
ft-us
|
2.98705e+10
nm
|
99
ft-us
|
3.01753e+10
nm
|
100
ft-us
|
3.04801e+10
nm
|
If you like the website, share it on social media.