Title: Theory / Unimportant / Experimental / Bio / Circadian rhythms - VSI
Tags: examplesSwitchExample1

Name: Cyrcadian rhythms
Definition: Internal clock of organisms, letting them know the time of the day
Page: 32
Context: life
Etymology: circa, about. Dies: day

Question: Example of advantage of cyrcadian rhythms
Answer: Preparing to switching from day view to night view. It takes times for some fish, and would forbid them to see predators
Page: 32

Name: defining period of the oscillation
Definition: the time taken for one revolution (360°) between successive reference points (phase points) on the cycle
Page: 32
Context: cyrcadian rhythms
Denoted by: Tau, T

Name: Acrophases
Definition: Peaks on the cycle
Page: 32
Context: cyrcadian rhythms

Name: Amplitude
Definition: extent of the increase (or decrease) in the biological parameter
Page: 32
Context: cyrcadian rhythms

Name: Mesor
Definition: the average value around which the variable oscillates
Page: 32
Context: cyrcadian rhythms

Name: The phase angle at time \(t\)
Definition: the angle \(\alpha\), such that a unit line of angle \(\alpha\), starting at Mesor, arrive at the height of the curve at time \(t\)
Page: 32
Variables: \(t\) some time in the curve
Context: cyrcadian rhythms
Denoted by: \(\Phi\)

Question: The freerun Cyrcadian cicle of most human
Answer: is around 24 hours and 10 minutes
Page: 32
Context: cyrcadian rhythms

Name: The freerun Cyrcadian cicle
Definition: The cyrcadian rhythms under constant condition (e.g. of light/darkness)
Page: 32
Context: cyrcadian rhythms

Question: In honeybees, how bees staying inside all the time know the correct time of the day.
Answer: By remarking the activity of forager, who goes outside and inside
Page: 40
Context: cyrcadian rhythms

Question: Why should cyrcadian rhythms be flexible
Answer: migration
Page: 40
Context: cyrcadian rhythms
Answer2: being distinct during different seasons
Answer3: doing distinct activity depending on the age

Question: How to show that plant have a cyrcadian rhythms or whether they follow the sun
Answer: put it in a dark cupboard and see whether it still acts regularly as in daylight
Page: 45
Context: cyrcadian rhythms

Name: A circadian system
Definition: A means of making the output rhythms biologically usefull
Page: 50
Context: cyrcadian rhythms
Index: 3
Kind: fig
Definition2: A setting mechanism
Conjdef: All of
Definition3: An oscillator

Name: An oscillator
Definition: self-sustained 24-hour rhythim generator
Page: 50
Context: cyrcadian rhythms
Index: 3
Kind: fig

Name: A setting
Definition: mechanism that links the endogenous oscillation to the astronomical oscillations
Page: def50
Context: cyrcadian rhythms
Index: 3
Kind: fig
Example: dawn and dusk