In the navy the rule of thumb was 12 miles to see another ship.

what a terrible video; asking these questions in such an obtuse manner, almost like they were designed to trip up the average skim reading of the problems. The first example would obviously start with dollar value invested, and end amount, and the 2nd example, whilst a little more obvious that you're not going to get an exact meeting in the middle, is still strange to me; cars aren't joined at the hip, i'd expect a real world question to state the miles driven and gallons used, then calculate MPG for cars 1, 2 and total. overall this feels too self satisfied, too smug with itself. I'm trying to do maths, not play chinese whispers.

Next time: why few math teachers know the spelling of reciprocal :P

TLDR: 3 miles, give or take

I’m pretty sure I proved that if you have A+b=A*a=B, a=B/(B-b),A=b/(a-1),B=ab/(a-1) Both a,b algebraic iff Both A,B algebrapic. One of a,b algebraic implies both A,B transcendental. One of A,B algebraic implies both a,b transcendental. Both A,B transcendental implies One or both of a,b transcendental. Both a,b transcendental implies One or both of A,B transcendental. For example, if you take A=pi, B=e, a= e/pi, b=e-pi at least one is transcendental. Not related to rock skipping or the world, but interesting.

Flat flat flat flat

What the Name of the Software you used to draw the Graph of the tangent?

I know it’s possible to see the White Cliffs of Dover whilst standing on the coast of Northern France near Calais. And that’s a distance of 22 miles

At least he’s not a flat earther

And the sailors of antiquity knew this. They saw it demonstrated regularly. Believing the earth was flat is a myth, or only believed by land lubbers..

My skipping record is actually ongoing. Legend has it, my rock is the first rock to skip across the Atlantic. I hope it doesnt mysteriously disappear :((

Sorry, I was thinking about ( o Y o ) the whole time.

Flatearthers will say the mountains on other continents. #flatearth

I didn't know. I thought it would be something like 5 miles. It's way less. 🤯

Can you answer the question, what is the maximum distance we can see lightning 🌩?

The second one is why I don't like that we use distance per volume instead of volume per distance

You can see France from Kent in England. The distance is 20 miles.

This is a good first start at answering your question about the distance to the horizon. But if you really want to be accurate, you must include the effects the atmosphere has on your actual estimations. Start with the section Differential Equation Of Light Rays in Born and Wolf. Your actual answer will be shorter than this analysis.

On a clear day, with good atmospheric conditions and minimal interference, it is possible to have excellent visibility over the ocean, under optimal conditions, you can see up to about 12.2 miles (19.6 km) over the ocean from sea level. This means you would be able to see a wide area and observe any objects or landmarks that are within this distance. However, it's worth noting that the distance can be affected by local weather conditions, so visibility may vary from day to day.

As far as the eye can.

Write this to people all the time. Not helpful that some very viewed youtube financial "gurus" use simple average and not geometric mean, Even financial articles get this wrong very often. 😑

Mean, medium, mode. Where did they all go?

Heighth is not a word.

The Isles of Shoals are six (6) statute miles (9.6 km) off the New Hampshire, USA coast and can be seen quite plainly in reasonable detail (can see that are artificial structures). Even poor field glasses show the buildings and topographical features.

Use a telescope, and you can see much further?

I know a guy that is a flat earther that told me he could easily see ships 20 miles away when he worked on oil platforms at sea - which somehow proved the earth was flat to him. The problem oil platforms are actually _really_ high up. Let's assume he is referring to the main top deck, often 120ft above the mean sea level (calm waters) - so not exactly 20 miles (actually 13) but humans suck at estimating distance that far out. However, his field of view could be over 20 miles (actually 27 - adding in the height of the person too) if you count both sides.

I'm kind of glad it isn't taught properly. I feel like students wouldn't learn the point of a mean and would just be following a rule. It's nice to have the misconception so you can recognise why we do it.

Earths not that big gave me a laugh. 8 billion plus popualtion and 70% is the oceans.

Send this to every flat earther😂

Whoa! Thanks for opening up my understanding of means. I've always wanted to understand the why and what of harmonic means

On a clear day, from Stonington CT, looking out over the water you can see the Montauk Point, NY, lighthouse, a distance of 17 miles. The top of the lighthouse is 168 feet above sea level so that factors in but that's a big difference from three miles.

I can see stars that are billions of miles away.

Total b.s.

If you try really hard, you can observe an object 293 kilometers away, while standing on the ground.

Looking at any large body of water it appears as a simisphere. Is this the curvature of the earth or just an illusion?

The size of the Earth was first calculated by the Greek Eratosthenes in 240 BC! He had it right within a mile. Link: kzbin.info/www/bejne/g6iWYXadlr2ch9k

The Distance from Calais, France to the White Cliffs of Dover is 20 miles; barely visible on a clear day.

_"How Far Out To Sea Can You Actually See?"_ <~ *ANSWER: It depends.......because it changes depending on multiple factors.*

If one foot high, you can see 1.22 miles. At 2 * 2 or 4 feet high, you can see 1.22 * 2 or 2.44 miles, and about 4 times as much surface area. At 3 * 3 or 8 feet high, you can see 1.22 * 3 or 3.66 miles, and about 9 times as much surface area. At 10 * 10 or 100 feet high, you can see 1.22 * 10 or 12.2 miles, and about 10 times as much surface area. At 100 * 100 or 10,000 feet high, you can see 122 miles and about 10,000 as much surface area. There are only two mountains on Earth where you 200 miles, in theory, if the mountains were by a seashore. Mount Everest and K2. Of course, it is possible, in theory to see a good deal more than 200 miles, if one is looking from one mountaintop toward another mountaintop at the right distance away, with no blocking terrain. From the Space Station, 250 miles up, one can see about 1,400 miles (very rough calculation).

My combinatorics prof wore a very similar tie dye shirt 😮

My impression, given the simplicity of the problems, is that your students are pretty bad.

What if I'm short sighted?

What's interesting is that from Huntington Beach, California, you can see Catalina Island, which is 30.5 miles (or about 49.1 km) away. I assume this is because Catalina Island peaks over the horizon.

If you’re standing it’s about 5km.

It's spelled "reciprocal" with an o

Navys comonly say a 6ft man standing in a row boat can be seen at 16 knotical miles

You lost me with kilometers, meters and the entire metric system

I live by the ocean and whenever I go to the beach and climb a sand dune thats about 25 feet high I can see the roundness of earth and I can tell how small it is.

Seen this in some QI episode, actor Ben Miller calculated it, of I remember correctly :)

I thought it was 15 miles