Results 201 to 210 of about 83,260 (295)

On the construction of a silvered glass telescope, fifteen and a half inches in aperture, and its use in celestial photography, by Henry Draper. (Reprinted from vol xiv, "Smithsonian contributions to knowledge," 1864); and, On the modern reflecting telescope and the making and testing of optical mirrors, by George W. Ritchey.

, 1904
Henry Draper, G. W. Ritchey
openalex   +2 more sources

Binocular Vision in Telescopes [PDF]

, 1880
Charles B. Boyle
openalex   +1 more source

Does a lack of juveniles indicate a threat? Understanding body size distributions in a group of long‐lived vertebrates

Journal of Animal Ecology, EarlyView.
We used a large dataset to examine turtle size distributions and found that for most species in most areas, distributions are typically skewed towards large adults, with few juveniles present. Therefore, a lack of juveniles does not inherently indicate a declining population, and researchers should be cautious not to over‐interpret adult‐dominated ...
Donald T. McKnight, Deborah S. Bower, Ellen Ariel, Stephen Beatty, Simon Clulow, Marilyn Connell, Annette R. Deppe, Sean Doody, Alastair Freeman, Arthur Georges, Samantha L. Hannabass, Ethan C. Hollender, Hunter Howell, Aaron Krochmal, Day B. Ligon, Eric Munscher, Eric J. Nordberg, Timothy C. Roth, Anthony Santoro, Jason Schaffer, Angela Simms, Ricky‐John Spencer, Paul Stone, Kameron C. Voves, Andrew D. Walde, Skye Wassens, Michael A. Welsh, Nick S. Whiterod, Wytamma Wirth, James U. Van Dyke   +29 more
wiley   +1 more source

Versatility of disposable scopes and their use in flexible, semi-rigid and rigid thoracoscopy. [PDF]

J Thorac Dis
Garcia Tome R, Vartanyan A, Kim C, Oh S.
europepmc   +1 more source

To adjust the Polar Axis of an Equatorial Telescope for Photographic Purposes [PDF]

, 1893
A. A. Rambaut
openalex   +1 more source

Against interpretive exclusivism* Contre l'exclusivisme interprétatif

Journal of the Royal Anthropological Institute, EarlyView.
Interpretive exclusivism is the dogma that we can only understand cultural systems by interpreting them, thereby ruling out causal explanations of cultural phenomena using scientific methods, for example based on measurement, comparison, and experiment.
Harvey Whitehouse
wiley   +1 more source

Hard braking events in bioptic drivers with central vision impairment. [PDF]

Ophthalmic Physiol Opt
Deffler RA, Frazee E, Cooley SL, Dougherty BE.   +3 more
europepmc   +1 more source

On a New Type of Telescope Objective Especially Adapted for Spectroscopic Use

, 1899
C. S. Hastings
openalex   +1 more source

Telescope Sights for Fighting Rifles [PDF]

, 1915
Edward C. Crossman
openalex   +1 more source

The countervailing impacts of significant 2020 events on youth delinquency

Criminology, EarlyView.
Abstract We test hypotheses that three significant events in the year 2020 impacted U.S. youths’ involvement in crime: (H1) less delinquency due to the coronavirus‐19 (COVID‐19) pandemic and associated constraints to youths’ routine activities and substance use; (H2) more delinquency due to the police killing of George Floyd and ensuing social unrest ...
Eric P. Baumer, Jeremy Staff
wiley   +1 more source