too much breathing.

..you are the kind of people I'd love to fill the world with. ( not just because of this video alone )

I believe this method was described in the Ashley Book Of Knots decades ago. Anyway, nice job.

Archimedes stopped at 96.

Amazing video !

this video is awesome. Now the method to find pi is clear to me but the windows 98 UI in 2012 is still a mystery 😅

😅 I dunno if this is good for me 😅 ?

Thank you!

An excellent way to grasp the priorities of the Biden administration -- whoever is really running it.

I, too, have been a long time fan of RPN calculators. Thanks for this tip...what a great HP look-alike! One comment: I think the example you showed starting at 6:25 can actually be solved even more easily as follows, since the numbers are entered in the order they appear: 3 ENTER 5 X 4 ENTER 2 ENTER 3 ÷ - √ + 2 ENTER 7 ENTER 3 √ X + x² ÷ Once you get used to it, it's very intuitive. The other advantage of RPN is that you see all intermediate results without having to store or write down anything.

as of right now the aid amount has gone up for all 6 states affected to a total of 344 million*per fema website* Given your projection of numbers and the size of the area affected I think your point is still very valid. Current total for NC is 60 million as of my writing this. Wonder if it'll affect the voter turn out...

Found the democrat shill channel.

BS

Hi! Thanks for this great graphic explanation of the motions of the sun and moon in relation to each other. Liked and subbed and I wonder why it took KZbin so long to bring this to my attention! I was wondering about something - a motion - that I can't even find a name for. Let me explain it as best I can: When the sun is at midsummer position (highest in the sky at summer solstice)- the moon is positioned where the sun WILL be in 6 months or where it was 6 months previous (lowest in the sky or where the sun is at winter solstice). They never explain this or even have a video graphic of this. It was hard to find an explanation of this sun/moon motion. Can you look into it and produce a video of it? I first noticed this one year around christmastime. I wondered why it seemed that the moon could wander so far all over the sky when it's path should be close to that of the sun and the 12 major constellations. I could not see the pattern or the big picture. I was amazed at how far northeast the moon rose - and how far from the sun it was - and if this was so, how can eclipses happen? Maybe it IS the saros cycle? I then looked for how the position of thr sun/moon related to each other around june 20th and was again amazed to see that the sun was rising high in the northeast while the moon rose very low in the south east! The moonphases can be anything - full, new, or in between - are in some sort of pattern that exactly repeats maybe every 18 to 19 years? There is a name for these motions and might be related the saros' cycles. We know the moon returns to the same position every so many years in 2 ways - north/south and east/west references or somethong like that. I am not so good with the terminology or the motions. Maybe one is apparent and one is actual. I need to do more research but do not know how to describe it in less words fir a search engine or even if there is a name for it. Thanks for anything you can do to that will allow us to visualize the many motions of the moon, our earth, the sun and all the planets! As a side thought: I also do astrology and i started out trying to disprove it. According to ancient meanings and definitions, it turns out that is quite accurate meaning i could not disprove astrology and astronomy. It just strengthens astrology in every way. It is not fortune telling. It is the magnetic and gravitational effects on bodies - bodies of water, bodies of ours, bodies like planets, asteroids, comets, etc. We are mostly made of water. The moon is the reason we have tides. Retrograde planets seem to set off certain effects. Apparent conjunctions, eclipses and oppositions and such also do the same. I have studied astronomy AND astrology since i was 14. I am almost 70 now. I can tell you that there is something to astrology and mankind needs to pay attention to it. Thanks for considering my question and THANKS so much for sharing your knowledge! You channel is awesome and what the internet SHOULD be used for - maintaining knowledge and teaching! Ps: That silly flat earth theory is just ridiculous! The info is all there and one doesn't need a book to see it!

Wow! First I would like to thank you for presenting what could be a rather dull and boring presentation in the wrong hands, in a very interesting manner. Now, I am going to bed, but I intend to digest all of your videos in the coming days. I do also intend to learn to use a spread sheet, which I never had any appreciation for in the past. I thank you again for your interesting presentations.

I love HP calculators - still occasionally using my HP15C from my first degree, 35 years ago, with a manual the size of a paperback book. I love that we can have an emulated calculator now.

Why hasn't someone designed a two spool wall mounted holder to coil as a figure 8? Like this...(o-o). More or less two regular hangers turned 90 degrees away from each other.. We don't all have a patio to lay out our hoses.

Mitchell Shores

Thank you, very much!

Same way as you do with electrical cord.

I think against traditional calculators, RPN had a massive advantage but against the likes of the Ti-84 it is not as strong. I think RPN is neat T and would like to have one sometime but I have yet to be let down with TI products.

where do I get those things you put on the wall!!!!?

Harris Lisa Miller Deborah Lewis Paul

Now I know how to find out which of my neighbors are mathematicians...

I would like to know why the moon seems much lower these days? I'm at 46deg north lat and for the past couple three years it's been low throughout it's path in my sky... all year long. I remember it going more overhead in the past. The thing has been down in the trees even at it's highest point. Maybe I'm seeing selectively and not realizing it.

Very well explained, thanks for the video.

Nowadays, (school) calculators have textbook entry, so one could enter the whole shebang there, and just let the calc do the work. However, it does have some downsides. 1) The given problem is already big for most (non-graphing) textbook entry calculators. It doesn't fit in the display, and editing and error handling is complicated. 2) You have to rely on the calc of the order of calculations it does. This can affect accuracy and rounding errors. 3) Most importantly: In my experience, it requires more mental discipline to enter textbook. You have to step away from your math and concentrate on operating the calc, while RPN can be "on the side". I do math tutoring, and this is indeed a big problem for many students.

Strange idea that the other calculation method requires parentheses, it does not, I did it without parentheses just fine. I find the rpn style confusing as I don't know where things go in the process, they just disappear. Also your written notation is confusing using . for decimals and multiplication. If error elimination is good, then you need to change some things.

I’ve been an HP user since 1983 but my last calculator is this Free42 calculator. It’s fantastic and so much quicker than any of the physical calculators for complex programs.

Great Job! TX

By Hand and by Feet 😂 6:30

DEGREES • FACES • EDGES • VERTICES Triangle: * Degrees: 180 * Faces: 1 (triangle) * Edges: 3 * Vertices: 3 Square: * Degrees: 360 * Faces: 1 (square) * Edges: 4 * Vertices: 4 Pentagon: * Degrees: 540 * Faces: 1 (pentagon) * Edges: 5 * Vertices: 5 Hexagon: * Degrees: 720 * Faces: 1 (hexagon) * Edges: 6 * Vertices: 6 Tetrahedron: * Degrees: 720 * Faces: 4 (equilateral triangles) * Edges: 6 * Vertices: 4 Octagon: * Degrees: 1080 * Faces: 1 (octagon) * Edges: 8 * Vertices: 8 Pentagonal Pyramid * Degrees: 1440 * Faces: 6 (5 triangles, 1 pentagon) * Edges: 10 * Vertices: 6 Octahedron: * Degrees: 1440 * Faces: 8 (equilateral triangles) * Edges: 12 * Vertices: 6 Stellated octahedron: * Degrees: 1440 * Faces: 8 (equilateral triangles) * Edges: 12 * Vertices: 6 Pentagonal Bipyramid * degrees: 1800 * Faces: 10 (10 triangles) * Edges: 15 * Vertices: 7 Hexahedron (Cube): * Degrees: 2160 * Faces: 6 (squares) * Edges: 12 * Vertices: 8 Triaugmented Triangular Prism: * Degrees: 2520 * Faces: 10 (6 triangles, 4 squares) * Edges: 20 * Vertices: 14 Octadecagon (18-sided polygon): * Degrees: 2880 * Faces: 1 (octadecagon) * Edges: 18 * Vertices: 18 Icosagon (20-sided polygon): * Degrees: 3240 * Faces: 1 (icosagon) * Edges: 20 * Vertices: 20 Truncated Tetrahedron * Degrees: 3600 * Faces: 8 (4 triangles, 4 hexagons) * Edges: 18 * Vertices: 12 Icosahedron: * Degrees: 3600 * Faces: 20 (equilateral triangles) * Edges: 30 * Vertices: 12 Cuboctahedron or VECTOR EQUILIBRIUM * Degrees: 3600 * Faces: 14 (8 triangles, 6 squares) * Edges: 24 * Vertices: 12 3,960 DEGREES 88 x 45 = 3,960 44 x 90 = 3,960 22 x 180 = 3,960 11 x 360 = 3,960 Rhombic Dodecahedron * Degrees: 4,320 * Faces: 12 (all rhombuses) * Edges: 24 * Vertices: 14 * Duel is Cuboctahedron or vector equilibrium Tetrakis Hexahedron: * Degrees: 4320 * Faces: 24 (isosceles triangles) * Edges: 36 * Vertices: 14 Icosikaioctagon (28-sided polygon): * Degrees: 4680 * Faces: 1 (icosikaioctagon) * Edges: 28 * Vertices: 28 5040 DEGREES 5400 DEGREES 5,760 degrees 6,120 degrees Dodecahedron: * Degrees: 6480 * Faces: 12 (pentagons) * Edges: 30 * Vertices: 20 7560 DEGREES 6840 DEGREES 7,200 DEGREES 7560 DEGREES Truncated Cuboctahedron * Degrees: 7920 * Faces: 26 (8 triangles, 18 squares) * Edges: 72 * Vertices: 48 Rhombicuboctahedron: * Degrees: 7920 * Faces: 26 (8 triangles, 18 squares) * Edges: 48 * Vertices: 24 Snub Cube: * Degrees: 7920 * Faces: 38 (6 squares, 32 triangles) * Edges: 60 * Vertices: 24 Trakis Icosahedron: * Degrees: 7920 * Faces: 32 (20 triangles, 12 kites) * Edges: 90 * Vertices: 60 8,280 DEGREES 8640 DEGREES 9000 DEGREES 9,360 degrees 9,720 degrees Icosidodecahedron: * Degrees: 10080 * Faces: 30 (12 pentagons, 20 triangles) * Edges: 60 * Vertices: 30 ? 10,440 degrees Rhombic Triacontahedron: * Degrees: 10,800 * Faces: 30 (rhombuses) * Edges: 60 * Vertices: 32 11160 DEGREES 11,520 DEGREES 11,880 DEGREES 12,240 DEGREES 12,600 DEGREES 12960 DEGREES END OF POLAR GRID Small Ditrigonal Icosidodecahedron: * Degrees: 16,560 * Faces: 50 (12 pentagons, 20 triangles, 18 squares) * Edges: 120 * Vertices: 60 Small Rhombicosidodecahedron * Degrees: 20,880 * Faces: 62 (20 triangles, 30 squares, 12 pentagons) * Edges: 120 * Vertices: 60 Rhombicosidodecahedron * Degrees: 20,880 * Faces: 62 (30 squares, 20 triangles, 12 pentagons) * Edges: 120 * Vertices: 60 Truncated Icosahedron: * Degrees: 20,880 * Faces: 32 (12 pentagons, 20 hexagons) * Edges: 90 * Vertices: 60 Disdyakis Triacontahedron: * Degrees: 21600 * Faces: 120 (scalene triangles) * Edges: 180 * Vertices: 62 Deltoidal Hexecontahedron * Degrees: 21,600 * Faces: 60 (kites) * Edges: 120 * Vertices: 62 Ditrigonal Dodecadodecahedron: * Degrees: 24480 * Faces: 52 (12 pentagons, 20 hexagons, 20 triangles) * Edges: 150 * Vertices: 60 Great Rhombicosidodecahedron * Degrees: 31,680 * Faces: 62 (12 pentagons, 20 hexagons, 30 squares) * Edges: 120 * Vertices: 60 Small Rhombihexacontahedron: * Degrees: 31,680 * Faces: 60 (12 pentagons, 30 squares, 20 hexagons) * Edges: 120 * Vertices: 60 Pentagonal Hexecontahedron: * Degrees: 32,400 * Faces: 60 (pentagons) * Edges: 120 * Vertices: 62

@MathWithoutBorders - This pair of Pi vids was very interesting. Thank You! My request: JAVA (but not JavaScript) has a Data Type that has no set limit to the number of digits of math precision. It is called BIGNUM. I would be interested to see the inscribed and circumscribed approaches to Pi calculated with BIGNUM, with results compared to published values of Pi at extreme precision.

used to be my goto calculator on android but with the NEW Plus42 Free42 has been BROKEN but thankfully I have an old APK that works but have to be careful NOT to UPDATE it with the BROKEN store version sad a once FREE version is now PAY... The Fall Of The Empire Enjoy The Collapse 🤪 😠😡🤬💥💀

I was today years old when I finally decided to look up how to do it properly

a circle is an infinite sided polygon...go crazy Archimedes...

I wonder what the relationship is to the number of polygon sides to the digits of pi accuracy...

Thank you so much for this video. This is what I've been missing all of my life.

From the hardware developer perspective, the RPN system allows you to design much more simply. There is no need to store and parse an expression. Both numbers required for any arithmetic operation are in the stack when you press the key, so the calculation can be performed immediately, rather than stored in a string that can be arbitrarily long (no buffer overruns). In my 45 years of using them, I’ve never needed more stack than the basic four levels, and generally only use three. An elegant machine, from a more civilised age.

Love your vids

This is pure gold. Thanks a lot, sir!

bro edexcel is wilding this came up in a gcse maths exam for 15-16 year olds 😭i somehow got it right

Maths gcse today:

Lies

Getting the amount of coffee right is an example of mechanical "impedance matching." Look it up!

Just bought a 35s for surveying purposes. My old Casio would have handled the entire problem just fine

Infinity*TAN(180/Infinity)

Brilliant! 😊

Nice demonstration of Archimedes' method! If only they had Excel in ancient Greece, Archimedes could have computed what took him a lifetime in just 5 minutes!

What you should be aware of is that piles of leaves can contain certain infectious diseases from mice that are dangerous to ingest.