Related Experiment Video
Updated: Aug 2, 2026

Contrast-Matching Detergent in Small-Angle Neutron Scattering Experiments for Membrane Protein Structural Analysis and Ab Initio Modeling
Published on: October 21, 2018
Extracting primordial density fluctuations
1E. Gawiser is at the Department of Physics, University of California at Berkeley, Berkeley, CA 94720, USA. E-mail: gawiser@astron. berkeley.edu. J. Silk is at the Departments of Physics and Astronomy and the Center for Particle Astrophysics, Univ.
Abstract:
The combination of detections of anisotropy in cosmic microwave background radiation and observations of the large-scale distribution of galaxies probes the primordial density fluctuations of the universe on spatial scales varying by three orders of magnitude. These data are found to be inconsistent with the predictions of several popular cosmological models. Agreement between the data and the cold + hot dark matter model, however, suggests that a significant fraction of the matter in the universe may consist of massive neutrinos.
Related Concept Videos
Extraction: Partition and Distribution Coefficients
For extracting a solute from an aqueous phase into an organic...
Density
Density and Archimedes' Principle
Current Density
The Principle of Superposition and the Gravitational Field
Density, Specific Weight, Specific Gravity and Compressibility of Fluid
Specific weight represents the weight per unit volume and is calculated by multiplying density...

