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1 How do you calculate the diameter of the sun? - Socratic
https://socratic.org/questions/how-do-you-calculate-the-diameter-of-the-sun
From the angular spacing α of the solar disc and the Earth Sun distance AU , the diameter of the Sun D=2tan(α2)AU , nearly. Explanation:.
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2 Measuring the Diameter of the Sun | Science project
https://www.education.com/science-fair/article/measuring-sun-diameter/
By knowing the distance of the sun from the earth and setting up simple ratios, students can calculate the diameter of the sun. The sun is approximately 93,000 ...
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3 How is the diameter of the Sun (or any other star) calculated?
https://www.quora.com/How-is-the-diameter-of-the-Sun-or-any-other-star-calculated
The equation for measuring the diameter of the sun. The diameter of the sun divided by the distance from the sun to the Earth is equal to the diameter of the ...
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4 Measuring the diameter of the Sun - EAAE
https://eaae-astronomy.org/workshops/measuring-the-diameter-of-the-sun
Measure the apparent diameter of the sun by measuring the transit time of the sun's image. Calculate the apparent diameter f in arcsec.  ...
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5 Can We Measure the Diameter of the Sun?
https://teachearthscience.org/Resources/SunDiameter.pdf
Knowing the distance to the Sun, we can use a “pinhole camera” to measure the diameter of the Sun.
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6 Measure the sun! Here's how to do it - EarthSky
https://earthsky.org/earth/you-can-measure-the-sun/
You can also measure the actual size of the sun with a ruler, tape measure and small mirror. It does require a very small amount of math, but it ...
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7 Measuring the Diameter of the Sun
https://www.fusd1.org/cms/lib/AZ01001113/Centricity/Domain/883/eslb24.pdf
The sun's diameter can be estimated by making two simple measurements and then solving a proportion problem. If you can determine three of the terms in the ...
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8 The Size of the Sun - SFA Physics
http://www.physics.sfasu.edu/astro/courses/ast105/homeobserving/sunsize.htm
Mark with the pencil around the edge of the sun's image. Record the distance of the index card from the file folder screen (d). Then measure the diameter of the ...
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9 Measuring the Diameter of the Sun and the Moon
https://www.sciencebuddies.org/science-fair-projects/project-ideas/Astro_p026/astronomy/measuring-the-diameter-of-the-sun-and-the-moon
You can measure the diameter of the Sun (and Moon) with a pinhole and a ruler! All you need to know is some simple geometry and the average distance between ...
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10 Measuring the Distance to the Sun - Solar Physics at MSU
https://solar.physics.montana.edu/YPOP/Classroom/Lessons/Eccentricity/
Given: The actual physical diameter of the Sun is diam = 1.4 x 109 meters (1.4 million kilometers). You will find it useful to know that for small angles ANG, ...
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11 Archimedes's Measurement of the Sun's Apparent Diameter
https://adsabs.harvard.edu/full/1975JHA.....6...75S
If (Figure 1) the eye saw from a point E located at the end of the rod, the apparent diameter of the Sun Q would be determined by the radius of the cylinder T ...
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12 How do you define the diameter of the Sun
https://astronomy.stackexchange.com/questions/1065/how-do-you-define-the-diameter-of-the-sun
Most literature will define the diameter of the Sun up to the photosphere, the layer of the solar atmosphere you would see if you were to ...
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13 How do you measure the distance between Earth and the Sun ...
http://curious.astro.cornell.edu/about-us/41-our-solar-system/the-earth/orbit/87-how-do-you-measure-the-distance-between-earth-and-the-sun-intermediate
By measuring the time taken for the radar echo to come back, the distance can be calculated, since radio waves travel at the speed of light.
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14 The Sun is 1,392,684 +/- 65 km across!
https://slate.com/technology/2012/03/the-sun-is-1392684-65-km-across.html
You would think that, of all the astronomical measurements we could make, one of the best known would be the diameter of the Sun.
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15 Solved Experiment 2: Pinhole Viewer You will use the ... - Chegg
https://www.chegg.com/homework-help/questions-and-answers/experiment-2-pinhole-viewer-use-viewer-estimate-diameter-moon-sun-without-looking-directly-q51444097
This problem has been solved! · To measure the diameter of the sun, hold the pinhole viewer so that the light from the sun passes through the pin hole viewer and ...
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16 Finding the Size of the Sun and Moon
https://www.education.txst.edu/ci/faculty/dickinson/PBI/fa/FindingSizeofSunMoon.htm
When used to project an image of the Sun, the pinhole viewer can be used to determine the diameter of Sun. What to Do.
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17 Variation of the diameter of the Sun as measured by the Solar ...
https://academic.oup.com/mnras/article/436/3/2151/1247191
The balloon-borne Solar Disk Sextant (SDS) experiment has measured the angular size of the Sun on seven occasions spanning the years 1992 to 2011. The solar ...
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18 Measuring the diameter of the Sun
http://www.astro.gsu.edu/lab/Supplemental_labs/labbook/Lab22.pdf
Today astronomers can use light travel time to determine the distance to the Sun to be about. 150,000,000 kilometers (km). In the lab activity you are going to ...
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19 A brief history of the solar diameter measurements - arXiv
https://arxiv.org/pdf/1609.02710
the Sand-reckoner that the apparent diameter of the Sun appeared to lie between ... determination of the time dependence of the solar radius can provide a ...
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20 Sun (part 1) - Google Sites
https://sites.google.com/a/myuvi.net/uvi-webphysics/phy400levellabs/physics-481-lab/sun-part-1?tmpl=%2Fsystem%2Fapp%2Ftemplates%2Fprint%2F&showPrintDialog=1
Find the image scale for the image. To do this, measure the diameter of the Sun in pixels. Divide the actual diameter of the Sun in km (1.4 million km) by the ...
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21 (PDF) Variation of the Diameter of the Sun as Measured by the ...
https://www.researchgate.net/publication/256762101_Variation_of_the_Diameter_of_the_Sun_as_Measured_by_the_Solar_Disk_Sextant_SDS
To determine the apparent diameter of the Sun, it is first necessary to measure the shape of the intensity profile of the solar limb with an ...
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22 Measuring Diameters and Distances | Earth - Space FM
https://www.space.fm/astronomy/earthmoonsun/measuring.html
3.3 - Understand how Eratosthenes and Aristarchus used observations of the Moon and Sun to determine successively: a) diameter of the Earth
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23 To determine the diameter of the sun, an astronomer might ...
https://homework.study.com/explanation/to-determine-the-diameter-of-the-sun-an-astronomer-might-sight-with-a-transit-a-device-used-by-surveyors-for-measuring-angles-first-to-one-edge-of-the-sun-and-then-to-the-other-estimating-that-the-included-angle-equals-32-assuming-that-the-distance.html
To determine the diameter of the sun, an astronomer might sight with a transit ( a device used by surveyors for measuring angles) first to one edge of the ...
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24 Measuring the Diameter of the Sun
https://gilmore.gvsd.us/subsites/Carolyn-Sale/documents/Science%20Pdfs/Measuring%20the%20Diameter%20of%20the%20Sun.pdf
The Sun's diameter can be estimated by making two simple measurements and then solving a proportion problem. Materials. Procedure. If you can determine ...
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25 To determine the diameter of the Sun, an astronomer might si
https://quizlet.com/explanations/questions/to-determine-the-diameter-of-the-sun-an-astronomer-might-sight-with-a-transit-a-device-4985e034-b3863ffa-fe6e-442a-a303-646d7dbd667b
To determine the diameter of the Sun, an astronomer might sight with a transit (a device used by surveyors for measuring angles) first to one edge of the ...
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26 Diameter of the Earth - Physics
http://www.physics.usu.edu/coburn/Measurement%20Projects/Diameter%20of%20the%20Earth.html
Make the measurements at local noon (when the sun is directly overhead). You can do this by looking in the local paper for the time of sunrise and sunset ...
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27 Measuring the Size of the Sun diameter of Sun distance to ...
https://physics.weber.edu/johnston/phsxteach/handouts/lab_sun.pdf
This activity uses some simple optics to project an image of the Sun, and some simple geometry to determine the size of the Sun. All one needs is a.
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28 To determine the diameter of the sun, an ... - Brainly.com
https://brainly.com/question/6537738
To determine the diameter of the sun, an astronomer might sight with a transit (a devise used by surveyors for measuring angles), first to one edge of the ...
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29 To determine the diameter of the sun, an astronomer might ...
https://www.numerade.com/ask/question/to-determine-the-diameter-of-the-sun-an-astronomer-might-sight-with-a-transit-a-device-used-by-surve-25612/
To determine the diameter of the sun, an astronomer might sight with a transit (a device used by surveyors for measuring angles) first to ...
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30 Measure the Solar Diameter - astroEDU
https://astroedu.iau.org/en/activities/1305/measure-the-solar-diameter/
Measure the Solar Diameter · a small mirror (it needs to be covered by the thick paper, so it must be between 5 and 20 cm) · a piece of thick ...
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31 Measuring the Distance to the Sun with Aristarchus - Page 1
http://web.mnstate.edu/colson/ESE2/Measuring_the_Distance_to_the_Sun/index.html
Take a ruler and hold it at arm length toward the Moon. Measure the apparent size of the widest diameter of the Moon. Then measure the distance from your eye to ...
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32 18.3: Diameters of Stars - Physics LibreTexts
https://phys.libretexts.org/Bookshelves/Astronomy__Cosmology/Book%3A_Astronomy_(OpenStax)/18%3A_The_Stars_-_A_Celestial_Census/18.03%3A_Diameters_of_Stars
It is easy to measure the diameter of the Sun. Its angular diameter—that is, its apparent size on the sky—is about 1/2°. If we know the angle ...
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33 How to Calculate the Angular Diameter of the Sun | Sciencing
https://sciencing.com/calculate-angular-diameter-sun-8592633.html
Angular diameter is, in fact, an angle, not a diameter. It is the angle that an object "takes up" as seen by an observer at a specified distance ...
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34 Measuring the Earth's Diameter from a Sunset Photo
https://vanderbei.princeton.edu/tex/sunset/ms.pdf
can measure the diameter of the Earth from a single photograph of a sunset such as the one shown in Figure 1. Take a close look at this picture. The Sun is ...
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35 Determining the Rotation Period of the Sun
https://www.swpc.noaa.gov/sites/default/files/images/u2/Activity_8_mod2-FINAL.pdf
will allow determination to within an Earth-day. Materials ... Measure, to the nearest millimeter, the diameter of the Sun on the photo.
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36 Thales' Determination of the Diameters of the Sun and Moon
https://www.jstor.org/stable/629176
If the tradition is trustworthy, i.e. if we can accept the report that Thales calculated the size of the sun's diameter as 7- of its orbit, ...
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37 How do astronomers measure the size of planets?
https://www.sciencefocus.com/space/how-do-astronomers-measure-the-size-of-planets/
The most common is to measure the apparent angular diameter of the planet – how big it looks against the sky – very precisely using a telescope. Combining this ...
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38 Measuring the Diameter of the Sun - PDF Free Download
https://docplayer.net/21222114-Measuring-the-diameter-of-the-sun.html
The sun s diameter can be estimated by making two simple measurements and then ... diameter of sun s image distance between two cards If you can determine ...
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39 Possible Measurements with Simple Projection of the Sun
https://astron-soc.in/outreach/newsletter/2017/09/21/possible-measurements-with-simple-projection-of-the-sun/
One very rewarding measurement using a projection box and a small telescope is that of the angular diameter of the Sun, which can be done on ...
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40 Lab1_ Measure the sun.docx - 1 Professor Washburn...
https://www.coursehero.com/file/86718158/Lab1-Measure-the-sundocx/
The equation for measuring the diameter of the sun. The diameter of the sun divided by the distance from the sun to the Earth is equal to the diameter of the ...
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41 Diameter of the Sun - The Physics Factbook - hypertextbook
https://hypertextbook.com/facts/2004/AmyChan.shtml
"The sun has a diameter of 865,000 miles (1.39 million km). Next to the sun, the Earth is just a tiny dot." 1.39 × 109 m. Bertotti, Bruno, and Paolo ...
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42 The Size of the Sun - PhysicsLAB!
http://dev.physicslab.org/Document.aspx?doctype=2&filename=IntroductoryMathematics_SizeSun.xml
Today we know that the average Sun's diameter is approximately 1.392 Gm. To four significant figures, what is the percent error for your calculations? Based on ...
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43 The Sun's angular diameter is measured to be 1920 ... - Toppr
https://www.toppr.com/ask/question/the-suns-angular-diameter-is-measured-to-be-1920-the-distance-d-of-the-sun/
Step 1: Note the given values We know that 1" = (13600) × pi180 rad Angular diameter theta = 1920" = 1920 × pi3600 × 180 rad = 0.0093 rad Distance ...
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44 How big is the sun? - Space.com
https://www.space.com/17001-how-big-is-the-sun-size-of-the-sun.html
The mean radius of the sun is 432,450 miles (696,000 kilometers), which makes its diameter about 864,938 miles (1.392 million km). You could ...
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45 How can the circumference of the sun be calculated? - Vedantu
https://www.vedantu.com/question-answer/circumference-of-the-sun-be-calculated-class-11-physics-cbse-5fe0a592a4f0c11499d1268e
Hint: In this question, we will perform an easy activity; this activity will help us to get our result. Also, we will study about the space and different ...
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46 How to measure the diameter of the sun - Science Fair Projects
http://www.all-science-fair-projects.com/science_fair_projects/7/60/e6f85157f679dba7e85c4f8ae96f15ba.html
The relationship that will be used is: diameter of sun (km) = diameter of sun's image (mm) -------------------- --------------------------- distance to sun (km) ...
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47 Frostbite Theater - Let's Measure the Diameter of the Sun!
https://education.jlab.org/frost/sun_diameter.html
How can you measure the diameter of the sun without needing to find a ... can you prove that the formula used to determine the diameter of the sun is, ...
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48 Sun-Earth-Moon: Sizes and Distances -- THE MOON
https://www.minerva.ufsc.br/~kanaan/intastro/lecture1/www.astro.washington.edu/labs/eratosthenes/rung2.html
The distance to the Moon was determined by first finding the size of the Moon relative to the size of the Earth. This determination of the relative sizes of ...
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49 How Aristarchus Calculated the Size of the Moon
https://www.cantorsparadise.com/how-aristarchus-found-the-size-of-the-moon-c21ff0d0ee0e
The earth's shadow diameter is approximately the arc length of β at the distance to the Moon. The slant heights of the shadow's cone from the ...
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50 How Big Are Sunspots? - OpenCurriculum
https://opencurriculum.org/9372/how-big-are-sunspots/
I measured the sun's diameter as 17.5 cm. With that information I determined: Entire Sunspot Cluster 2.5 cm / 17.5 cm ≈ 0.142857 (meaning the sunspot is ...
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51 ASTR 1020 Homework Solutions
https://www.physast.uga.edu/~jpc/astr1020/ASTR1020F09Hmwk.pdf
The diameter of the Sun is to the size of a basketball as the distance to ... (b) The actual length of its semimajor axis can be calculated from the small- ...
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52 How High the Moon? - Galileo and Einstein
https://galileoandeinstein.phys.virginia.edu/lectures/gkastr1.html
That is because the point of the cone is the furthest point at which the earth can block all the sunlight, and the ratio of that distance to the diameter is ...
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53 Measuring stellar sizes
http://spiff.rit.edu/classes/phys301/lectures/size/size.html
It seems obvious: if you want to measure the size of a star, just point your telescope at it and take a picture. Measure the angular size of the star in the ...
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54 How Big Is The Sun? - Science ABC
https://www.scienceabc.com/nature/universe/how-big-is-the-sun.html
In terms of size, however, the sun has a diameter of about 864,000 miles, nearly 110 times greater than the diameter of Earth. When it comes to ...
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55 Student Project: Make a Scale Solar System | NASA/JPL Edu
https://www.jpl.nasa.gov/edu/learn/project/make-a-scale-solar-system/
If you calculated the planet sizes compared with each other, measure those sizes as you draw them, giving your planets the correct diameter. You can draw your ...
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56 Calculating the Scale Astronomy Optional Lesson
https://currikicdn.s3-us-west-2.amazonaws.com/resourcedocs/5655e639ad873.pdf
If we were to round the Sun's diameter down to ... class decided made sense, there's no reason not to calculate based on that scale.] The Scale.
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57 The Sun Is Shrinking | The Institute for Creation Research
https://www.icr.org/article/sun-shrinking
1 The diameter of the sun is close to one million miles, ... The shrinkage rate centuries ago would be determined by the balance of solar forces.
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58 Determining Planet Properties - Astronomy Notes
https://www.astronomynotes.com/solarsys/s2.htm
If you know how far away a planet is from you, you can determine its linear diameter D. The diameter of a planet D = 2p × (distance to the ...
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59 Measuring the Diameter of the Sun Lesson Plan - EduRef.org
https://www.eduref.org/lessons/science/spa0014
CAUTION: Do not look at the sun! Move the meter stick around until the shadow of the foil-covered card falls on the other card. A bright image of the sun will ...
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60 On the Calculation of the Angular Diameter of the Sun by ...
http://www.astro.sunysb.edu/steinkirch/reviews/radio_steinkirch.pdf
The peak frequencies were identified and the diameter of the Sun was ... A radio interferometer measuring an extensive source such as the Sun will show.
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61 Comparing measurements of Sun-Earth distance
https://emerginginvestigators.org/articles/comparing-measurements-of-sun-earth-distance-shadow-method-and-two-pinhole-method-variations/pdf
pinhole methods used by the public for determining the Sun- ... along with the Sun's diameter, into the method's formula to.
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62 Build a Solar System Model | Exploratorium
https://www.exploratorium.edu/ronh/solar_system/
Make a scale model of the Solar System and learn the REAL definition of "space." · Fill in the diameter of the Sun you want your model to be scaled by. · Click on ...
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63 Measuring the Size of the Sun - pgrasc.org
https://pgrasc.org/wp-content/uploads/2012/11/solar_distance.pdf
determining the diameter of the Sun. Last month we used a pinhole projector to determine the ratio of the Sun's diameter to its distance.
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64 All the Sun through the eye of a pinhole
https://faculty.tamuc.edu/cdavis/resources/AESP/InstructionalMaterials/Pinhole%20Camera%20-Touch%20the%20Sun.pdf
Calculate the diameter of the Sun from your measurements and a known distance to the ... An image of an object can be used to determine the object's size or.
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65 Sun - Wikipedia
https://en.wikipedia.org/wiki/Sun
The Sun is the star at the center of the Solar System. It is a nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its ...
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66 The Angular Diameter of the Sun and Moon - WebAssign
https://www.webassign.net/seedfoundations/ebook/CH03-3.html
The moon's orbit is slightly elliptical, so it can sometimes look a bit larger or smaller, but its angular diameter is always close to 0.5°. You can repeat this ...
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67 How are astronomers able to measure how far away a star is?
https://science.howstuffworks.com/question224.htm
The Earth's orbit around the sun has a diameter of about 186 million miles (300 million kilometers). By looking at a star one day and then looking at it ...
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68 Measure the Solar Diameter | Educate & inspire
http://www.space-awareness.org/en/activities/1305/measure-the-solar-diameter/
The Sun moves across the sky at a constant rate because of the rotation of the Earth. By measuring how fast the Sun moves, you can work out how big the Sun ...
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69 Solar Diameter Measurements Compared - IOPscience
https://iopscience.iop.org/article/10.1086/524680/fulltext/72647.text.html
Some of the instruments that have been used to measure the solar diameter are ... The solar diameter is usually measured by determining the position of the ...
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70 Chapter 1
https://www.austincc.edu/mmcgraw/files_1405/Chapter1-About%20Science.ppt
Distance to the Sun ... The Sun and moon are round so why not the earth? ... However, they needed Aristarchus' measurement of the moon's diameter to ...
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71 Answered: What is the diameter of the Sun in… | bartleby
https://www.bartleby.com/questions-and-answers/what-is-the-diameter-of-the-sun-in-miles-the-actual-diameter-of-the-sun-more-like-865000-miles.-what/e72c4795-f3b9-423d-89e5-5212210e987e
What is the %-Error in your calculated value? Given that the Diameter of Earth is about 7200 miles, how many Earths would fit across the Sun? You turn toward ...
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72 The Scientific Method - NMSU Astronomy
http://astronomy.nmsu.edu/geas/lectures/lecture10/slide05.html
At sunset, measure the amount of time between which the Sun appears to set from the ground level and from the height of your head (h). When you are standing up, ...
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73 Transit of Venus and the Distance to the Sun
https://profmattstrassler.com/articles-and-posts/relativity-space-astronomy-and-cosmology/transit-of-venus-and-the-distance-to-the-sun/
But to determine LV and LE separately requires a parallax measurement, and a transit of Venus ... note the sun's angular diameter is about 1/2 of a degree).
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74 TAKE-HOME EXP. # 2 A Calculation of the Circumference and ...
https://home.csulb.edu/~gpickett/PS112/thexp2.pdf
In geometric fact, the actual diameter of the Sun is about 100 times the diameter of the Earth. This 100-to-1 geometry governs the physical path of the light.
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75 How did we find the distance to the sun? - Phys.org
https://phys.org/news/2015-01-distance-sun.html
With the distance to the Moon known, the stage was set for another Greek astronomer, Aristarchus, to take the first stab at determining the ...
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76 Calculating the A.U. | The Astronomical League
https://www.astroleague.org/content/calculating-au
The Astronomical Unit is a measurement that astronomers use to measure distances within the solar system. One AU is the mean distance from the center of the ...
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77 Semi-diameter - Marine Glossary
https://www.starpath.com/cgi-bin/web_card/courses/glossary.pl?show_def=130&cat=
The tabulated values in the Nautical Almanac are not related to this; they are geometric factors determined by the distance to the sun.
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78 Lewis and Clark in Montana — a geologic perspective - MBMG
http://www.mbmg.mtech.edu/Pubs/Lewis-Clark/lewis-clark-nav.asp
The angular difference between the sun's center and its upper or lower limb is called its “semidiameter” (half diameter). The Nautical Almanac Lewis used had a ...
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79 Astronomical unit | Definition, Conversion, & Facts - Britannica
https://www.britannica.com/science/astronomical-unit
In principle, the easiest way to determine the value of the astronomical unit would have been to measure the Earth-Sun distance directly by means of the ...
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80 Diameter of the Solar System - Universe Today
https://www.universetoday.com/15585/diameter-of-the-solar-system/
Defining the diameter of the Solar System is a matter of perspective and characterization. You can look at the Solar System's diameter as ...
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81 Let's Measure the Diameter of the Sun! - physics4me
https://physicsforme.com/2013/04/19/lets-measure-the-diameter-of-the-sun/
As an added challenge, can you prove that the formula used to determine the diameter of the sun is, in fact, correct?
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82 How Large Is That Dim Celestial Body? - Astronomy Answers
https://www.aa.quae.nl/en/grootte.html
If the celestial body looks distinctly different through your telescope than a star, then you can determine from the apparent size of the object ...
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83 [Solved] From parallax measurement, the Sun is found to be at ...
https://testbook.com/question-answer/from-parallax-measurement-the-sun-is-found-to--6089445b73acd6283447f2fd
"The correct answer is option 4) i.e. 100 CONCEPT: Parallax method: This method is used to determine large distances such as the distance of a planet ...
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84 How to Measure Things That Are Astronomically Far Away
https://www.wired.com/story/how-to-measure-things-that-are-astronomically-far-away/
Using this, he determined the distance from other planets to the Sun in terms of the Earth's distance. Boom---that gets you the distance in ...
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85 What is the circumference of the Earth, Calculation ... - Cuemath
https://www.cuemath.com/geometry/circumference-of-the-earth/
Let us discuss how they are calculated individually. ... What will be the ratio of the diameter of the earth to the sun? Responses.
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86 Measuring the Solar Diameter from Space
https://www.star.ac.za/available-projects/measuring-solar-diameter-space
The celestial geometry of the Sun, the Moon, and the spacecraft can be calculated very precisely, and an accurate measurement of the diameter of the Sun can ...
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87 What is the diameter of Earth? Teaching Wiki - Twinkl
https://www.twinkl.com/teaching-wiki/diameter-of-earth
Because of the differences between Earth's polar and equatorial diameter, scientists decided that it was important to figure out an average or 'mean' diameter.
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88 Measure the Solar Diameter
https://astroedu-live-23c120ac21e54624824f07dd7-9e38bc8.divio-media.org/pdf/astroedu-1305-en.pdf
Diameter. Hands-on activity to measure the Sun ... You have measured and calculated the diameter of the Sun in miles/kilometers! CURRICULUM.
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89 Determination of the Size, Distance and Mass of the Sun
http://web.mit.edu/8.13/www/JLExperiments/JLExp37.pdf
In this experiment you will determine the sun's linear radius and ... you can derive the angular diameter of the sun, the orientation of the ...
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90 Measuring Shadows to Calculate the Size of Earth - NSTA
https://www.nsta.org/science-teacher/science-teacher-february-2020/measuring-shadows-calculate-size-earth
In this article I expand on this achievement and show how Earth's circumference can be calculated by measuring the shadows cast by any pair of sunlit ...
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91 How to Calculate the Circumference of Earth - Tutors
https://tutors.com/math-tutors/geometry-help/circumference-of-earth
Back in 240 B.C.E., a Greek named Eratosthenes calculated the circumference ... Earth is so very small compared to the sun -- roughly 109 earths could fit ...
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92 Measure the Sun's Size
https://www.nisenet.org/sites/default/files/catalog/uploads/diy_ss_measure_sun_size.pdf
The equation on the right is used to calculate the Sunʼs diameter. Using the Sun image size (d) and the string length (l) you recorded above, along with the ...
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93 PHYS-633: Problem set #0 Solutions
https://www.bartol.udel.edu/~owocki/phys633/Probset0-solns.pdf
Another way to look at it is to recall the actual angular diameter of the ... At the distance you calculated in (a), what would the Sun's flux here on Earth ...
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94 A Handy Guide to Measuring the Sky - Time and Date
https://www.timeanddate.com/astronomy/measuring-the-sky-by-hand.html
Angular size or angular diameter of a celestial object is the angular separation between opposite edges of the object. The Sun and the Moon are the only objects ...
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