AstroPictionary is a video dictionary of astronomy vocabulary. The video dictionary content is authored by Dr. M. M. Montgomery, who has taught astronomy to over 10,000 students in higher education at a Carnegie R1 (i.e., Very High Research Activity) Doctoral university in the United States. AstroPictionary is a video glossary to Dr. Montgomery's latest textbook, Astronomy Essentials, which is published through TopHat/Morton/Norton/Fountainhead Press at tophat.com/marketplace/science-&-math/-/full-course/astronomy-essentials/4335/
Thank you! If a distant galaxy say 2 billion light-years away seen through the Hubble, appreaed in the Hubble lens to be visible moving transversly at say 1 km per hour across the lens view, would we know how fast the galaxy was moving in reality? Or if Mars started moving in the sky 1 km per hour transversly...? Thank you so much... Great video!!
No, you would not, as you need to know the speeds in three directions (toward/away, up/down, left/right) to know the true spatial direction. Thanks for the kudos!
How can you exactly generated light with a certain wavelength? What happens if the foton has just just a bit more energy? Will the electron still jumper and where is the tiny diff in required energy going?
Think of you climbing stairs; you have a lot of stored energy; your body just uses what it needs to go up one stair and uses some of the excess energy to release as heat or other energy. Same thing with electrons. When you go down stairs, you release energy and only the amount needed to go down the stairs; same thing with electrons. Why no read the textbook; it will help you with these question :D
Good question. As stated and shown in the video, the values are observed: Astronomers observe data and use data in data analysis, such as this calculation.
Thank you for explaining the local meridian. 1- Where on this diagram is the GP of the Celestial body the observer is measuring with their altitude angle? 2- Is an altitude angle measured by the observer geometric or apparent based on the observer’s field of view?
Geographic Position or Longitude and Latitude do3s not matter in the Local system. It is your GP where you stand on Earth that you base your local system from.
@@astropictionary3988 Both the observer and the geographic position are on the surface of Earth. A flat baseline from the observer to the GP on the surface of Earth geometrically proves a flat Earth and disqualifies a globe. Please search solar angles in google and go through the images and say “ding” each time you see a triangle with a flat baseline.
Will a blue dwarf eventually direcly become a black dwarf ? Or will a blue dwarf first become a white dwarf, and then that white dwarf will become a black dwarf ?
Good question. You'll have to read the Astronomy Essentials textbook as the answer is too long to explain. White dwarfs are expected to die into black dwarfs but not blue dwarfs.
GPS clock frequency data contradicts the idea of gravitational redshift or blueshift. The data shows that once a GPS clock emits a frequency, the light maintains its frequency into a gravity well. There is no gravitational redshift or blueshift. The data does show that clocks at a higher altitude do emit a redder frequency due to the decreased magnetic flux density at that altitude vs clocks at a lower altitude. Likewise, clocks at a higher altitude run faster due to the decrease in magnetic flux density, which causes a smaller back emf onto the clock circuitry vs clocks at a lower altitude. What you are showing is not gravitational redshift but intrinsic redshift, most likely cause by atomic or magnetic flux density differences at the source where the light is emitted, much in the same way that sound is redshifted or blueshifted due to air density differences at the source where the sound is emitted.
@@astropictionary3988 'Gravitational Energy and the Flatness Problem' - Ronald R. Hatch Ron Hatch worked for NAVCOM and is the topmost patent holder in GPS algorithms.
@@astropictionary3988 'Gravitational Energy and the Flatness Problem' - Ronald R. Hatch Ron Hatch worked for NAVCOM and is the topmost patent holder in GPS algorithms.
Dark matter is the part of our minds/universe, we’ve yet to light up!! Galaxy 🌌 Gravity is memory!! 🐘 🐾 🥁 Inception is based on a true story!! 📺 We’re living in a dream world 🌎 😴 Planting seeds in each others minds!! 🌱 Let’s create heaven on earth!! 👼 Galaxy collisions!! 🌌 Twin flame connections!! 🔥 🔥 Superheroes!! Super pets!! Super foods!! Everything is awesome!!🤩
Dark matter is matter and eventually we will find a way to "discover" it. We have found ways to measure its influence; so, it's just a matter of time till we can measure it directly :)
@@astropictionary3988 I’ve learned to awaken myself through fasting and flowing more!! Loving everything and being one with the universe!!🧊🦖🧊🦕🧊🦣🧊🌌🧊📚🧊🌍🧊🎩🪄🐇 As we awaken individually, we awaken collectively!! The universe awakens like an amusement park!!🌌 Galaxy collisions are like our own thoughts or minds coming together!! As if the Earth is a brain and we’re rejoining Pangaea!! Life/light finds a way!! 🌞
@@astropictionary3988 Fair enough, here is NASA website and I am quoting: " the Sun’s equatorial regions rotate faster (taking only about 24 days) than the polar regions (which rotate once in more than 30 days)." The link here: www.nasa.gov/image-article/solar-rotation-varies-by-latitude/
LOVE this approach. Nice and slow on the math. Thank you. Think you should reorganize your playlists though. By category would be best" cosmology, stellar, planetary, etc. Finding specific content is difficult.
I agree. You would need to read the textbook Astronomy Essentials books.apple.com/us/book/astronomy-essentials/id1590887070 . This video is just a definition.
But you have provided absolutely no explanation as to WHY they form or HOW? You've basically just given a dictionary definition; great... we can all read. But you haven't explained why the actual resonance (e.g. 5:3 or 5:2 etc) causes an instability that deflects/ejects that asteroid from that region. The question is: What is the physics at these exact orbits, that causes the body to not be stable?
