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

Trans power and channel loss, Trans power : 20dBm Channel loss = 60dB We kn...

Trans power : 20dBm Channel loss = 60dB We know that Received power (dBm) = Tx Power (dBm) + Tx Antenna Gain (dBi) + Rx Antenna Gain (dBi) - loss (db) as Tx and Rx antenna gains ar

SZXDASDas, AskDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD question #MinaDASDDimum 100 ...

AskDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD question #MinaDASDDimum 100 words accepted#

Science 9.., Which "spheres" are interacting when water evaporates from pla...

Which "spheres" are interacting when water evaporates from plants? Select all that apply.

Week6 assign, For this Assignment, you will identify a social issue or prob...

For this Assignment, you will identify a social issue or problem that is important to you and reflect on how it might be remediated through the application of learning principles t

Protozoa, disadvantages of protozoa

disadvantages of protozoa

Define the disorders of the reproductive system, Define the Disorders of th...

Define the Disorders of the Reproductive System Disorders that may affect the proper functioning of the reproductive system include abnormal hormone secretion, sexually transmi

Explain the factors affecting peripheral resistance, Explain the Factors Af...

Explain the Factors Affecting Peripheral Resistance i) If more than 30% of the blood volume of a person is lost through bleeding (haemorrhage), the compensatory mechanism may f

Making a ''burp'' bottle, Making a 'burp' bottle Fit a bottle or flask ...

Making a 'burp' bottle Fit a bottle or flask with a single-hole stopper which carries a funnel. Put the stopper firmly in the bottle and then pour water into the funnel. The bo

Explain the insulin, Explain the Insulin Insulin is a hormone synthesiz...

Explain the Insulin Insulin is a hormone synthesized from the precursor called preproinsulin. Preproinsulin has four peptides. Insulin circulates in the blood in a free state.

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