Explain how parallax method is used to measure distance of a star from Earth.

Explain how parallax method is used to measure distance of a star from Earth.
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Explain how parallax method is used to measure distance of a star from Earth.
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A star is 5.5 light years away from the Earth. How much parallax in arcsec will it subtend when viewed from two opposite points

Description : A star is 5.5 light years away from the Earth. How much parallax in arcsec will it subtend when viewed from two opposite points

Last Answer : A star is 5.5 light years away from the Earth. How much parallax in arcsec will it subtend ... from two opposite points along the orbit of the Earth?

Is a star with no measurable parallax is very close to Earth.?

Description : Is a star with no measurable parallax is very close to Earth.?

Last Answer : No, if you can measure no parallax, the star is far away -further than a certain distance.

What is the effect of distance from an object on parallax angles?

Description : What is the effect of distance from an object on parallax angles?

Last Answer : The parallax angle is inversely proportional to thedistance.

What is parallax error ?

Description : What is parallax error ?

Last Answer : The apparent change in position of a target as the direction of vision changes is called parallax. For this reason, the measurement error is called parallax error.

Parallax Error What ?

Last Answer : of sight Direction Of change For Any Of the object Of location Apparently To change Parallax And As a result Lessons To take That Wrong Is Him Parallax Error Says.

What is parallax angle?

Description : What is parallax angle?

Last Answer : What is parallax angle?

What is parallax?

Description : What is parallax?

Last Answer : What is parallax?

Electrostatic forces in high voltage circuits cause indicating instruments to give ____________. A. parallax readings B. highly intuitive readings C. highly accurate readings D. inaccurate readings

Description : Electrostatic forces in high voltage circuits cause indicating instruments to give ____________. A. parallax readings B. highly intuitive readings C. highly accurate readings D. inaccurate readings

Last Answer : Answer: D

Removal of parallax, may be achieved by focussing (A) The objective (B) The eye-piece (C) The objective and the eye-piece (D) None of these

Description : Removal of parallax, may be achieved by focussing  (A) The objective  (B) The eye-piece  (C) The objective and the eye-piece  (D) None of these 

Last Answer : (C) The objective and the eye-piece 

Pick up the correct statement from the following: (A) If the image of the object does not fall on the plane of the cross-lines, parallax exists (B) Parallax has nothing to do with the eyepiece (C) The eyepiece is adjusted for clear vision of the cross hairs (D) All the above

Description : Pick up the correct statement from the following: (A) If the image of the object does not fall on the plane of the cross-lines, parallax exists (B) Parallax has nothing to do with the eyepiece (C) The eyepiece is adjusted for clear vision of the cross hairs (D) All the above

Last Answer : (D) All the above

While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is (A) Correctly focussed (B) Not correctly focussed (C) Said to have parallax (D) Free from parallax

Description : While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is (A) Correctly focussed (B) Not correctly focussed (C) Said to have parallax (D) Free from parallax

Last Answer : (C) Said to have parallax

If flying height of a spacecraft is H, the length of air base is B and the parallax difference between two points is dp, then the difference in height (A) h = dp/(B/H) (B) h = (B/H) dp(C) h = dp/(H/B) (D) h = (H/B) dp

Description : If flying height of a spacecraft is H, the length of air base is B and the parallax difference between two points is dp, then the difference in height (A) h = dp/(B/H) (B) h = (B/H) dp (C) h = dp/(H/B) (D) h = (H/B) dp

Last Answer : Answer: Option A

Which one of the following statements is not correc t? (a) Parallax error is eliminated when there is no change in the staff reading when eye is moved up and down (b) The objective lens is to be focused towards a white or bright background for clear visibility of cross-hairs (c) Temporary adjustments of the dumpy level are to be performed at every set up (d) The eyepiece need not be adjusted after the first set up when the same surveyor is taking readings

Description : Which one of the following statements is not correc t? (a) Parallax error is eliminated when there is no change in the staff reading when eye is moved up and down (b) The objective lens is ... (d) The eyepiece need not be adjusted after the first set up when the same surveyor is taking readings

Last Answer : (b) The objective lens is to be focused towards a white or bright background for clear visibility of cross-hairs

In a theodolite a condition arising when the image formed by the objective is not in the plane of cross hairs is known as (a) Parallax* (b) Out of sight (c) Out of place (d) Transiting

Description : In a theodolite a condition arising when the image formed by the objective is not in the plane of cross hairs is known as (a) Parallax* (b) Out of sight (c) Out of place (d) Transiting

Last Answer : (a) Parallax*

What is the distance of the nearest star besides the sun from the earth? -Do You Know?

Description : What is the distance of the nearest star besides the sun from the earth? -Do You Know?

Last Answer : answer:

What is the distance of the nearest star besides the sun from the earth?

Description : What is the distance of the nearest star besides the sun from the earth?

Last Answer : 4.2 light years

Suppose if we measure the time lapse between the two Sunsets by sitting in the beach, from this we can estimate – (1) The distance between the sun and the earth (2) The depth of the ocean (3) The radius of the earth (4) The radius of the sun

Description : Suppose if we measure the time lapse between the two Sunsets by sitting in the beach, from this we can estimate – (1) The distance between the sun and the earth (2) The depth of the ocean (3) The radius of the earth (4) The radius of the sun

Last Answer : (3) The radius of the earth Explanation: A method is described whereby, using primitive equipment anyone can measure the size of the earth to an accuracy of order of magnitude 10% by observing two sunsets in the space of a few seconds.

Suppose if we measure the time lapse between the two Sunsets by sitting in the beach, from this we can estimate (1) The distance between the sun and the earth (2) The depth of the ocean (3) The radius of the earth (4) The radius of the sun

Description : Suppose if we measure the time lapse between the two Sunsets by sitting in the beach, from this we can estimate (1) The distance between the sun and the earth (2) The depth of the ocean (3) The radius of the earth (4) The radius of the sun

Last Answer :  The radius of the earth

Explain the method to determine distance of a planet from the Earth.

Description : Explain the method to determine distance of a planet from the Earth.

Last Answer : Explain the method to determine distance of a planet from the Earth.

Name the method used to measure following resistances:- (i) Low resistance (ii) Medium resistance (iii) Insulation resistance (iv) Earth resistance.

Description : Name the method used to measure following resistances:- (i) Low resistance (ii) Medium resistance (iii) Insulation resistance (iv) Earth resistance.

Last Answer : Following are the methods used to measure resistances:-  (i) Low resistance: 1.Voltmeter-Ammeter Method 2. Kelvin's Double bridge Method  (ii) Medium resistance: 1.Voltmeter-Ammeter Method 2. ... of Charge Method  (iv) Earth resistance : 1. Fall of Potential Method 2. Earth tester

Could a single graphic scale be used to measure distance on a Mercator projection Explain?

Description : Could a single graphic scale be used to measure distance on a Mercator projection Explain?

Last Answer : Feel Free to Answer

Explain the method to measure mass.

Description : Explain the method to measure mass.

Last Answer : Explain the method to measure mass.

Explain the method of repetition to measure horizontal angle using transit theodolite.

Description : Explain the method of repetition to measure horizontal angle using transit theodolite. 

Last Answer : Procedure: 1 Suppose the angle AOB is to be measured by the repetition process. The theodolite is set over O. The instrument is centered and levelled properly.Vernier A is set at 00 and vernier is at 1800 ... 8 The mean of the two angles obtained from two faces gives the actual angle AOB. 

State the methods used to measure insulation resistance and explain Dielectric Absorption method.

Description : State the methods used to measure insulation resistance and explain Dielectric Absorption method.

Last Answer : There are three types of tests for measuring insulation resistance:  1. Spot test reading or Short Time test  2.Time-resistance test or Dielectric absorption test or Testing methods based on the PI & DAR  3. ... and if value of PI is less than 2 and value of DAR is less than 1.25

How would you use the spectrum of a star to estimate its distance?

Description : How would you use the spectrum of a star to estimate its distance?

Last Answer : Need answer

Which of the following is indicated by the colour of a star? (1) weight (2) distance (3) temperature (4) size

Description : Which of the following is indicated by the colour of a star? (1) weight (2) distance (3) temperature (4) size

Last Answer : (3) temperature Explanation: Colour is caused by the temperature of the surface of the star. A star approximates the behavior of a black body radiator. As a black body gets hotter its color changes. ... reddish appearance, whereas big heavy stars are hot (over 30,000°C), and have a bluish glow.

Which of the following is indicated by the colour of a star ? (1) weight (2) distance (3) temperature (4) size

Description : Which of the following is indicated by the colour of a star ? (1) weight (2) distance (3) temperature (4) size

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Description : Can Arduino measure distance?

Last Answer : Yes, Arduino can measure distance using ultrasonic sensors, such as the HC-SR04 sensor, or infrared sensors, such as the Sharp GP2Y0A21YK sensor.

you should always measure your following distance in -General Knowledge

Description : you should always measure your following distance in -General Knowledge

Last Answer : You should always measure your following distance in seconds.

How would you measure the distance between Omaha and Nebraska?

Description : How would you measure the distance between Omaha and Nebraska?

Last Answer : The correct answer would be 40.44.

How can I measure distance on google maps?

Description : How can I measure distance on google maps?

Last Answer : I wasn't sure that this would be possible but it is now since they have added a measuring tool. To measure a distance you need to right click on any point on the map and select "measure ... think sat navs will eventually take second place. Having tried both I much prefer google maps for navigation.

How do you measure find the distance between two cities?

Description : How do you measure find the distance between two cities?

Last Answer : If the cities are close to each other, then you can treat themas if they were on a plane surface and the distance between themwould be the scaled-up version of the distance between them on amap ... great arc.Incidentally, this is why flights from London to Tokyo, forexample, fly over the North pole.

What is a measure of motion as distance traveled per unit of time?

Description : What is a measure of motion as distance traveled per unit of time?

Last Answer : In physics, that is called:* Speed, when no direction isspecified.* Velocity, when a direction IS specified.

Could a single graphic scale be used to measure distance on a Mercator projection?

Description : Could a single graphic scale be used to measure distance on a Mercator projection?

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How do you measure the distance across a school field?

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How do you measure distance on a planet?

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What metric unit measure a distance across Lake Erie?

Description : What metric unit measure a distance across Lake Erie?

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Could a single graphic scale be used to measure distance on a Mercator projection?

Description : Could a single graphic scale be used to measure distance on a Mercator projection?

Last Answer : No. It cannot

Which are used to measure distance north to south of the equator?

Description : Which are used to measure distance north to south of the equator?

Last Answer : Lines of latitude are used to delineate the distance a point iseither north or south of the Equator.

I would like to know what kind of distance does the calculator measure?

Description : I would like to know what kind of distance does the calculator measure?

Last Answer : The distance calculator works by using the Global Positioning System to calculate the distance between two positions on the earth. The calculator can measure in yards but there are different calculators and calculators with different settings that have different measuring units.

A light year is a measure of : (1) Speed (2) Velocity (3) Distance (4) Time

Description : A light year is a measure of : (1) Speed (2) Velocity (3) Distance (4) Time

Last Answer : (3) Distance Explanation: A light-year is a unit of length equal to just under 10 trillion kilometres (or about 6 trillion miles). As defined by the International Astronomical Union (TAU), a ... lightyear is a measure of distance (rather than, as is sometimes misunderstood, a measure of time).

Which of the following sensor is not used to measure the distance? A : Radar B : Sonar C : Laser RangefinderD : Intertial Sensor

Description : Which of the following sensor is not used to measure the distance? A : Radar B : Sonar C : Laser RangefinderD : Intertial Sensor

Last Answer : D : Intertial Sensor

Which of the following sensor is not used to measure the distance? A : Radar B : Sonar C : Laser Rangefinder D : Intertial Sensor

Description : Which of the following sensor is not used to measure the distance? A : Radar B : Sonar C : Laser Rangefinder D : Intertial Sensor

Last Answer : D : Intertial Sensor

Which of the following sensor is not used to measure the distance? A : Radar B : Sonar C : Laser Rangefinder D : Intertial Sensor

Description : Which of the following sensor is not used to measure the distance? A : Radar B : Sonar C : Laser Rangefinder D : Intertial Sensor

Last Answer : D : Intertial Sensor

Which of the following sensor is not used to measure the distance? A : Radar B : Sonar C : Laser Rangefinder D : Intertial Sensor

Description : Which of the following sensor is not used to measure the distance? A : Radar B : Sonar C : Laser Rangefinder D : Intertial Sensor

Last Answer : D : Intertial Sensor

The frequency of recombination between gene present on the same chromosome as a measure of the distance between genes was explained by (a) Sutton Boveri (b) T.H. Morgan (c) Gregor J.Mendel (d) Alfred Sturtevant.

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A light year is a measure of : (1) Speed (2) Velocity (3) Distance (4) Time

Description : A light year is a measure of : (1) Speed (2) Velocity (3) Distance (4) Time 

Last Answer : Distance