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Visible
I will never know what it means to be invisible. I will never know how it is to be able to kiss carelessly in the park, to just go for it. What it means to stroll in the streets and not have to deal with the fact that somebody might try and touch my hair as they walk by. How it is not to have to constantly self-soothe in monologues after a day of being asked multiple times whether one understands German. To dissolve in the crowd is not an option for me. I belong to several minority groups at once; to conceal this would entail more dangers for me than to name my positionalities
Visible evidence
By observing students at Leeds Metropolitan University, Katherine Everest, Debbie Morris and colleagues were able to provide library spaces for the way they actually work, not the way we think they ought to work
The Visible Spectrum
Today, the national environmental movement is entering a new phase, led by new players, just as the still young environmental protection movement is becoming more politically influential at the local level. The political power of the environmental justice and equity movement and its links with racial and social justice organizations makes its potential impact reach far beyond âNIMBYâ (not-in-my-backyard) protests. NIMBY was the first wave of quasi-organized local environmental protests, usually rooted in a single issue. Environmental justice is the next wave, drawing in a broader range of concerns. The focus of this analysis is on how environmental issues are manifesting themselves in the Greenpoint/Williamsburg area of Brooklyn. The experience of West Harlem in opposing the operation of the North River Treatment Plant is also examined. In both instances the social class and ethnic identity of these grassroots environmentalists significantly differ from those of the environmental activists of previous generations
Making graphene visible
Microfabrication of graphene devices used in many experimental studies
currently relies on the fact that graphene crystallites can be visualized using
optical microscopy if prepared on top of silicon wafers with a certain
thickness of silicon dioxide. We study graphene's visibility and show that it
depends strongly on both thickness of silicon dioxide and light wavelength. We
have found that by using monochromatic illumination, graphene can be isolated
for any silicon dioxide thickness, albeit 300 nm (the current standard) and,
especially, approx. 100 nm are most suitable for its visual detection. By using
a Fresnel-law-based model, we quantitatively describe the experimental data
without any fitting parameters.Comment: Since v1: minor changes to text and figures to improve clarity;
references added. Submitted to Applied Physics Letters, 30-Apr-07. 3 pages, 3
figure
Making the invisible visible
Whilst some disabilities are easily identifiable to others because they are visible â such as use of a wheelchair or loss of limbs â others may be more difficult to ascertain as they are hidden
Visible submicron microdisk lasers
The authors describe the performance of submicron microdisk lasers fabricated within InGaP/InGaAlP quantum well material working at room temperature. The smallest lasers, with diameters of approximately 600 nm, feature ultrasmall mode volumes and exhibit single mode operation at low threshold powers. Their small cavity volumes of approximately 0.03 ”m^3 enable microdisk lasers to be used as spectroscopic sources. Here the authors demonstrate the fabrication and characterization of visible, monolithically fabricated, submicron microdisk lasers
Eos visible imagers
Some of the proposed Earth Observing System (Eos) optical imagers are examined. These imagers include: moderate resolution imaging spectrometer (MODIS); geoscience laser ranging system (GLRS); high resolution imaging spectrometer (HIRIS); the intermediate thermal infrared spectrometer (ITIR); multi-angle imaging spectrometer (MISR); earth observing scanning polarimeter (EOSP); and the lightening imaging sensor (LIS)
Visible light enhances the antimicrobial effect of some essential oils
The photodisinfection is a topical, broad spectrum antimicrobial technology, targeting bacteria, virus, fungi, and protozoa effective for single cells as for biofilms. Natural molecules have been studied less than synthetic agents in the process but they are currently receiving great interest. Therefore, the aim of this study is to evaluate for the first time if non-coherent blue and red light enhances the antimicrobial activity of some essential oils when standard strains for antibiotic or fungicide tests are enlightened in vitro. Staphylococcus epidermidis, Pseudomonas aeruginosa and Candida albicans collection strains were irradiated with monochromatic visible light from light emitting diodes in the presence of 5% and 0.5% eucalyptus (Eucalyptus globulus), clove (Eugenia caryophyllata), and thyme (Thymus vulgaris) essential oils. Microbial levels were measured by plate count on culture media. In this preliminary report, the results differ according to the kind and concentration of antimicrobial oils, the wavelength of light, and the prokaryotic or eukaryotic microorganism. The results support the idea that mainly blue light enhances the innate antimicrobial activity of the essential oils, especially phenols, and could offer a very efficient and natural way to combat microorganisms in several industries and medical applications.Postprint (author's final draft
Visible Sector Supersymmetry Breaking Revisited
We revisit the possibility of "visible sector" SUSY models: models which are
straightforward renormalizable extensions of the Minimal Supersymmetric
Standard Model (MSSM), where SUSY is broken at tree level. Models of this type
were abandoned twenty years ago due to phenomenological problems, which we
review. We then demonstrate that it is possible to construct simple
phenomenologically viable visible sector SUSY models. Such models are indeed
very constrained, and have some inelegant features. They also have interesting
and distinctive phenomenology. Our models predict light gauginos and very heavy
squarks and sleptons. The squarks and sleptons may not be observable at the
LHC. The LSP is a stable very light gravitino with a significant Higgsino
admixture. The NLSP is mostly Bino. The Higgs boson is naturally heavy. Proton
decay is sufficently and naturally suppressed, even for a cutoff scale as low
as 10^8 GeV. The lightest particle of the O'Raifeartaigh sector (the LOP) is
stable, and is an interesting cold dark matter candidate.Comment: 23 pages, 3 figures, LaTe
Visible parts of fractal percolation
We study dimensional properties of visible parts of fractal percolation in
the plane. Provided that the dimension of the fractal percolation is at least
1, we show that, conditioned on non-extinction, almost surely all visible parts
from lines are 1-dimensional. Furthermore, almost all of them have positive and
finite Hausdorff measure. We also verify analogous results for visible parts
from points. These results are motivated by an open problem on the dimensions
of visible parts.Comment: 22 pages, 3 figure
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