Formal Amendment of the Constitution of Canada

Canada\u27s Constitution Act of 1982 is discussed. The act changed the way in which amendments to Canada\u27s constitution were made. Previously, the Imperial Parliament made the amendments

Distance measures in cosmology

Formulae for the line-of-sight and transverse comoving distances, proper motion distance, angular diameter distance, luminosity distance, k-correction, distance modulus, comoving volume, lookback time, age, and object intersection probability are all given, some with justifications. Some attempt is made to rationalize disparate terminologies, or at least abuse bad usage.Comment: This short and purely pedagogical text is not submitted anywhere but here. Errors reported to the author will be rewarded with gratitude and acknowledgement