The quasar group appears to violate a widely accepted assumption known as the cosmological principle, which holds that the universe is essentially homogeneous when viewed at a sufficiently large scale. Calculations suggest that structures larger than about 1.2 billion light-years should not exist, researchers said.
Human respiration rate is measured when a person is at rest and involves counting the number of breaths for one minute by counting how many times the chest rises. An optical breath rate sensor can be used for monitoring patients during a magnetic resonance imaging scan.
1. Respiration rate is the number of breaths taken each minute (a breath is one inhalation and one exhalation). While watching a clock, count the number of times you breathe in two minutes. Make three trials, and find the average. Divide by two to find the average number of breaths per minute.