Terahertz, symbolized as THz, is a unit of frequency equivalent to one trillion cycles per second, or 1,000,000,000,000 Hz. In the electromagnetic spectrum, terahertz waves occupy the fascinating territory between microwaves and infrared light. This region, often referred to as the “terahertz gap,” has long captivated scientists because of its potential in numerous applications, including advanced imaging techniques, security screening, and even the detection of defects in materials.
Remarkably, terahertz radiation is non-ionizing, meaning it is much safer for biological tissues compared to X-rays. This capability opens doors to potentially revolutionary medical imaging and diagnostics opportunities without the risk of harmful radiation exposure. As researchers continue to explore this “hidden power,” the future holds exciting prospects for terahertz technology across a multitude of fields.
The rotation per minute (RPM) is a fascinating unit of rotational speed that measures the number of complete turns an object makes in one minute. Though RPM is most commonly associated with car engines and records players, it’s a vital metric in a wide array of industries, including aviation, where turbine engines can reach up to 10,000 RPMs. Fun fact: beyond Earth, RPM played a crucial part in the Apollo missions—during re-entry, the command module performed a slow spin at around 2 RPMs to ensure even heat distribution!
In the everyday whimsy of RPM, consider that your average washing machine can spin at an impressive 1,200 RPM during the spin cycle. Additionally, high-speed trains like the Japanese Shinkansen have wheels rotating at about 280 RPM while cruising at speeds over 300 km/h, showing how RPM bridges the gap between mundane household chores and cutting-edge transportation technology.
Terahertz | Rotations per minute |
---|---|
0
THz
|
0
rpm
|
0.1
THz
|
6e+12
rpm
|
0.2
THz
|
1.2e+13
rpm
|
0.3
THz
|
1.8e+13
rpm
|
0.4
THz
|
2.4e+13
rpm
|
0.5
THz
|
3e+13
rpm
|
0.6
THz
|
3.6e+13
rpm
|
0.7
THz
|
4.2e+13
rpm
|
0.8
THz
|
4.8e+13
rpm
|
0.9
THz
|
5.4e+13
rpm
|
1
THz
|
6e+13
rpm
|
1.1
THz
|
6.6e+13
rpm
|
1.2
THz
|
7.2e+13
rpm
|
1.3
THz
|
7.8e+13
rpm
|
1.4
THz
|
8.4e+13
rpm
|
1.5
THz
|
9e+13
rpm
|
1.6
THz
|
9.6e+13
rpm
|
1.7
THz
|
1.02e+14
rpm
|
1.8
THz
|
1.08e+14
rpm
|
1.9
THz
|
1.14e+14
rpm
|
2
THz
|
1.2e+14
rpm
|
2.1
THz
|
1.26e+14
rpm
|
2.2
THz
|
1.32e+14
rpm
|
2.3
THz
|
1.38e+14
rpm
|
2.4
THz
|
1.44e+14
rpm
|
2.5
THz
|
1.5e+14
rpm
|
2.6
THz
|
1.56e+14
rpm
|
2.7
THz
|
1.62e+14
rpm
|
2.8
THz
|
1.68e+14
rpm
|
2.9
THz
|
1.74e+14
rpm
|
3
THz
|
1.8e+14
rpm
|
3.1
THz
|
1.86e+14
rpm
|
3.2
THz
|
1.92e+14
rpm
|
3.3
THz
|
1.98e+14
rpm
|
3.4
THz
|
2.04e+14
rpm
|
3.5
THz
|
2.1e+14
rpm
|
3.6
THz
|
2.16e+14
rpm
|
3.7
THz
|
2.22e+14
rpm
|
3.8
THz
|
2.28e+14
rpm
|
3.9
THz
|
2.34e+14
rpm
|
4
THz
|
2.4e+14
rpm
|
4.1
THz
|
2.46e+14
rpm
|
4.2
THz
|
2.52e+14
rpm
|
4.3
THz
|
2.58e+14
rpm
|
4.4
THz
|
2.64e+14
rpm
|
4.5
THz
|
2.7e+14
rpm
|
4.6
THz
|
2.76e+14
rpm
|
4.7
THz
|
2.82e+14
rpm
|
4.8
THz
|
2.88e+14
rpm
|
4.9
THz
|
2.94e+14
rpm
|
5
THz
|
3e+14
rpm
|
5.1
THz
|
3.06e+14
rpm
|
5.2
THz
|
3.12e+14
rpm
|
5.3
THz
|
3.18e+14
rpm
|
5.4
THz
|
3.24e+14
rpm
|
5.5
THz
|
3.3e+14
rpm
|
5.6
THz
|
3.36e+14
rpm
|
5.7
THz
|
3.42e+14
rpm
|
5.8
THz
|
3.48e+14
rpm
|
5.9
THz
|
3.54e+14
rpm
|
6
THz
|
3.6e+14
rpm
|
6.1
THz
|
3.66e+14
rpm
|
6.2
THz
|
3.72e+14
rpm
|
6.3
THz
|
3.78e+14
rpm
|
6.4
THz
|
3.84e+14
rpm
|
6.5
THz
|
3.9e+14
rpm
|
6.6
THz
|
3.96e+14
rpm
|
6.7
THz
|
4.02e+14
rpm
|
6.8
THz
|
4.08e+14
rpm
|
6.9
THz
|
4.14e+14
rpm
|
7
THz
|
4.2e+14
rpm
|
7.1
THz
|
4.26e+14
rpm
|
7.2
THz
|
4.32e+14
rpm
|
7.3
THz
|
4.38e+14
rpm
|
7.4
THz
|
4.44e+14
rpm
|
7.5
THz
|
4.5e+14
rpm
|
7.6
THz
|
4.56e+14
rpm
|
7.7
THz
|
4.62e+14
rpm
|
7.8
THz
|
4.68e+14
rpm
|
7.9
THz
|
4.74e+14
rpm
|
8
THz
|
4.8e+14
rpm
|
8.1
THz
|
4.86e+14
rpm
|
8.2
THz
|
4.92e+14
rpm
|
8.3
THz
|
4.98e+14
rpm
|
8.4
THz
|
5.04e+14
rpm
|
8.5
THz
|
5.1e+14
rpm
|
8.6
THz
|
5.16e+14
rpm
|
8.7
THz
|
5.22e+14
rpm
|
8.8
THz
|
5.28e+14
rpm
|
8.9
THz
|
5.34e+14
rpm
|
9
THz
|
5.4e+14
rpm
|
9.1
THz
|
5.46e+14
rpm
|
9.2
THz
|
5.52e+14
rpm
|
9.3
THz
|
5.58e+14
rpm
|
9.4
THz
|
5.64e+14
rpm
|
9.5
THz
|
5.7e+14
rpm
|
9.6
THz
|
5.76e+14
rpm
|
9.7
THz
|
5.82e+14
rpm
|
9.8
THz
|
5.88e+14
rpm
|
9.9
THz
|
5.94e+14
rpm
|
10
THz
|
6e+14
rpm
|
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