Physics, while plural in derivation, is generally construed as a singular noun except when referring to several "physics" (i.e., two or more different systems of physics). In this sentence, where the meaning is "uncertainty in the field of physics," the singular form "needs" would be correct.
That depends on the number of changes you need to make. If it is only a few minor corrections then you should wait until you are contacted by the copy editor or when you receive the proofs. If the changes are extensive, contact the editorial offices so that the paper can be pulled from its assigned issue. The revised paper will have to be sent to the scientific editor to review the changes. Once the changes are accepted, the paper will be assigned to another issue.
Image programs such as Adobe Photoshop can be used to make the conversion.
CMYK stands for cyan, magenta, yellow, and black. Most computer-generated figure files are created using the RGB (red, green, blue) color model, which is used for devices, such as computer monitors, that create color with light. The CMYK system uses the 4 process colors used in printing, and is therefore the necessary format for figure files to be used for printing.
The specifics are:
Yes, the AAS is qualified under section 501(c)(3) of the U.S. Internal Revenue Code to receive tax-deductible donations.
Gerald Edward Kron ("Gerry") pursued high-precision photometry with photoelectric instrumentation of his design, primarily of variable stars and star clusters, aimed at advancing the field of stellar populations and interstellar reddening. He worked at Lick Observatory, at the Flagstaff Station of the US Naval Observatory, and at Mt. Stromlo.
AAS Announces New Topical Conference Series
The AAS is pleased to announce a new Topical Conference Series that will begin in late July and August of 2013, with proposals for possible conferences due June 1, 2012. The AAS vice presidents will competitively select three proposals for conferences in 2013 and may select more for future years.
The AAS Topical Conference Series, or AASTCS, (pronounced "aztecs"), will be composed of cutting-edge topical meetings representing frontier research in astronomy and astrophysics, planetary science, heliophysics or related scientific areas and provide an enjoyable venue to interact at depth with colleagues and fellow researchers. Attractive locations will be a feature of these conferences and we anticipate the first conferences will be held in a comfortable mountain setting with ample opportunity for recreation outside of the set meeting times.
See AASTCS page for further details.