Drop-size distribution of fog droplets determined from transmission measurements in the 053–101-μm wavelength range

Lenham, A. P.; Clay, M. R.

doi:10.1364/ao.21.004191

Cited by 8 publications

(3 citation statements)

References 7 publications

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“…(c) Photograph of deposited iodine on the inner top part of the paper. are observed up to about 65 µm [16,17] and in mist the VMD tends to be a little higher than fog. In another words, mist is heavier and lies closer to the ground.…”

Section: (4)mentioning

confidence: 91%

Antigravity, an Answer to Nature’s Phenomena including the Expansion of the Universe

Piyadasa

2020

Advances in High Energy Physics

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The gravitational attraction force being proportional to the mass has been experimentally shown for several hundred years now, but no gravitational repulsion has been identified within the accepted scientific reasoning. Here, we show that the gravitational repulsion force, similar to the gravitational attraction among particles has also been in existence in nature but, yet to be recognized. The results of experiments are shown in detail and are discussed in the recent series of-publications. It is also shown here that this gravitational repulsion force is proportional to the temperature which is an indicator of thermal energy of the particle, similar to the gravitational attraction that is proportional to the mass of the particle. The situations where heavy particles such as iodine, tungsten, and thorium in vacuum move against gravitational force have already been shown qualitatively. The increase in time-of-fall of water droplets (slowing down of fall) with rise in temperature is also quantitatively discussed. This article discusses two major phenomena observable in nature, clouds and the expansion of universe, which could be more preciously explained by the concept of antigravity.

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Section: (4)mentioning

confidence: 91%

Antigravity, an Answer to Nature’s Phenomena including the Expansion of the Universe

Piyadasa

2020

Advances in High Energy Physics

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“…In reference [18], fog droplet-size distribution was studied by measuring the transmission measurement of wavelengths O.53p, O.65j, 1.23k, 2.2j., 4.Olj.t and 1O.1 over a 17 m path. Choosing such a short path is more efficient for studying fog because it eliminates the path averaging of attenuation and hence droplet concentration.…”

Section: Wavelength Performance Comparisonmentioning

confidence: 99%

“…This was in agreement with bimodal distributions reported earlier by Eldrigde [19] and on which basis SimulightTM [16] was built. Reference [18] also concludes that fog having concentration of droplets diameter in the 3.2-12.8j are short-lived dense fogs.…”

Section: Wavelength Performance Comparisonmentioning

confidence: 99%

Free-space optics wavelength selection: 10 μm versus shorter wavelengths

Achour¹

2004

SPIE Proceedings

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This paper is written in response to many inquiries about 10 j. Free-Space Optics (FSO) performance compared to shorter wavelengths. The increasing interest in better understanding FSO weather effects is the result of carrier requests as well as recent progress in analyzing fog effects on FSO signal propagation. Extensive studies in modeling fog and simulating FSO attenuations revealed the complexity behind estimating FSO link availability in a given geographical location. There are many different types of fog that are inhomogeneous along the propagation path. Each type is characterized by the water droplet sizes and their concentrations, which are used in Mie scattering theory to compute FSO signal attenuation. As a result, some vendors are augmenting their FSO links with a microwave backup link or simply investigating other wavelengths claimed to be more resistant to fog such as 10 jt.In this paper, we analyze ways to improve FSO link availability, 10 t improvement compared to shorter wavelengths, and challenges behind successful microwave backup installation.

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Advances in Spectro-Polarimetric Light-Scattering by Particulate Media

Ceolato

Rivière

2017

Springer Series in Light Scattering

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Drop-size distribution of fog droplets determined from transmission measurements in the 053–101-μm wavelength range

Cited by 8 publications

References 7 publications

Antigravity, an Answer to Nature’s Phenomena including the Expansion of the Universe

Antigravity, an Answer to Nature’s Phenomena including the Expansion of the Universe

Free-space optics wavelength selection: 10 μm versus shorter wavelengths

Advances in Spectro-Polarimetric Light-Scattering by Particulate Media

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