Stellar parallax, Science

Assignment Help:

Stellar Parallax

If  the Earth were stationary, a given line  joining  point A on the Earth, a nearby star C and any given distant star would never vary. However, if  the Earth changed its position in space and moved  from A to B, this alignment would also change. Thus, in the background  of more distant stars, the hearby star would apwar to shift from C1  to C2  as the Earth moved  from A to B. This apparent shifting of nearby stars against the background of more distant ones has been observed, and the phenomenanis  called Stellar parallax. It is a periodic kind of a chahge. A given star first shifts one way and then the other, during the course of  one year, hence it must be due to the fact that the Earth is moving around the Sun.  

The change is small, less than a second of  an arc. It was only  in  1838  that Friedrich Bessel, a German astronomer, could measure the stellar parallax of  a  star. -1  he  nearest star, the Sun when viewed against distant stars appears to shift approximately  1" per day.  


Related Discussions:- Stellar parallax

Explain the bowman’s capsule - structures of a nephron, Explain the Bowman’...

Explain the Bowman’s capsule - Structures of a Nephron Bowman’s capsule: It contains the primary filtering device of the nephron, that is, glomerulus. It is a double-walled, cu

Energy transfer., true or false a conductor does not transfer energy well

true or false a conductor does not transfer energy well

Discuss the important gastro intestinal procedures, Question 1 Explain ...

Question 1 Explain the following disorders a) Thalassemia b) Hemophilia c) Tetralogy of Fallot d) Ac

Material Science, #1.During take-off, the wing of the airplane is actually ...

#1.During take-off, the wing of the airplane is actually subjected to a cyclic stress range of 150 MPa at a stress ratio of 0.1. Estimate the mean stress intensity factor, and the

Formation of the solar system, Formation of the solar system:   This...

Formation of the solar system:   This theory is based on the assvmption that the Sun and all the planets were formed from a huge rotating cloud df interstellar gas and dust.

Hop eld neural networks, Create a binary 0-1 Hop field neural network with ...

Create a binary 0-1 Hop field neural network with 3 neurons and 3 stable states. Specify the weights and biases you have used, and draw the state transition diagram corresponding t

Ingestion for chemical accidents, Ingestion : The standard treatment for t...

Ingestion : The standard treatment for this type of poisoning is as follows: (1) Tell the casualty to spit out as much of the material as possible and then wash the mouth thoro

Explain the gastric phase - secretion of gastric juice, Explain the Gastric...

Explain the Gastric Phase - Mechanism of Secretion of Gastric Juice Another 45% of the gastric secretion is discharged in this phase. The mechanical presence of food in the ant

Severe bleeding-controlling bleeding, Severe Bleeding In case of seve...

Severe Bleeding In case of severe bleeding, use the following steps: (1) Control bleeding by the following means: (a) Apply direct pressure on the wound for 5-15 minute

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd