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After some time he reached 30-ish and just looked at it searching where some numbers lied. The lecture he was currently visiting was probably about number theroy and the professor was talking about prime numbers. So why don't mark them up? Since Young-Ulam didn't find any similarities between the primes except the fact that they can't be divided by anything else than 1 and themselves, which is obvious, he expected a somewhat random pattern. And yep it turned out that way.

But wait a second! From the center to the top right corner a straight line built up! Like no way primes align like that. He wondered what the next number would be on that line, so he continued the spiral. 57... Oh crap, thats not a prime. Mhh, so that was probably just a coincidence. And eventually he left the spiral to continue listening the lecture.

A few months later while learning for an upcoming examination in number theory, Young-Ulam found that mysterious spiral in a corner of his notes and started to think about it again. As he increased the number of numbers in the spiral, he found more and more of those straight, diagonal lines of prime numbers. Most likely that wasn't a coincidence anymore as he earlier thought. Some areas in the spiral had way more prime-density than others. The Ulam Spiral was born.

Today, we actually use this fact — that primes tend to collect on diagonal lines in the Ulam Spiral — to find new massive prime numbers. Of course you can't just take a formular and you get the next prime from it, but you can iterate throught the output of one of these eqations and test them to actually be a prime, since it will be one a lot more likely than on other diagonal lines.

The first 225 numbers in an Ulam Spiral.

In the image above you can see how the Ulam Spiral for the first 225 natural numbers looks like. Every dot represents a number, starting with 1 at the green dot in the middle and going around anti-clockwise. The prime numbers are marked in red. You can already see a few diagonal groups right? Now lets increase the spiral size.

The first 2401 numbers in an Ulam Spiral.

The first 39601 numbers in an Ulam Spiral.

And finally, you can download a version with 1.14 million numbers here. Attention! It may slow down your computer when displaying the image since it has roughly 164 megapixels.

Most of the times Yggdrasil is said to be an ash but depending on the location it is often described as a yew tree instead. This uncertainty comes from the fact that these trees aren't endemic in Scandinavia and thus easily mixed up.

Yggdrasil grew so big it's three roots reach over all nine worlds. At the end of each root there is a fountain of different meaning. Mimirs Well offers wit and wisdom. To drink from it Mimir desires a sacrifice in return. Odin, the father of gods, lost his left eye this way. The second fountain is the Urdar Fountain. Next to it three beautiful Norns dwell. They are named Urd, Skuld and Verdani. They are responsible for the life of all mankind, every creature and every god. They control the past, the present and the entire future. The third fountain is called Hwergelmir. It is the well of all existing rivers. Here the dragon Nidhöggr lives. Due to his jealousy he gnaws on the bottom of the spring.

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Bobby Why ID? Use a class. So you can use it more than once.

Bumbleboss Cuz it already had a class so I couldn't. Wait wot?

Bobby What the fuck? You can use more than one class?

Bumbleboss WAT?!

Bobby That's what classes are for lmfao!

Bumbleboss (╯°□°）╯︵ ┻━┻

Bobby class="class_1 class_2 class_9999"

Bumbleboss reeeeeeeeee <div class="some_class" id="black-bg">

Bobby You can use IDs multiple times as well but they're inteded to IDENTIFY a div not STYLE it. Classes are basically for styling and IDs for identifying. Classes use again, IDs use once. That's CSS and HTML basics tho xD

Bumbleboss A silent mouth I shall be on that one. *Finds Bobby telling everyone in #coding*

Bobby lmfao

So?

I just told the entire internet. If you already got a class, use an ID and if you also got that one, well... HTML has some serious issue I guess...

There were many other primordials such as the night aka Nyx or the sleep aka Hypnos or the ocean aka Oceanus. Primordials were generally amortals but Oranos was perfectionist. They fucked and made titans and all of mythical creatures such as giants, cyclops and mermaids. But Oranos hated his children cuz they were monsters. Then he wanted to kill 'em all.

Chronos, one of his children came together with other 3 titan siblings. They took Oranos' weapon from Gaia. Then children hold legs and arms of Oranos. Chronos took the weapon to cut Oranos into pieces and spread all of the parts across universe. Cuz they were too far away they wouldn't be able to come together. But this didnt mean he is really dead, he just broke apart. One of the pieces fell to earth and it reborn as Aphrodite aka the titan of beutyu beauty.

Aphrodisiac comes from Aphrodite. Then creatures and titans lived the generation. Aaaaand - Chronos fucked Gaia. And they had children. Zeus, Poseidon, Hades. However Chronos had same destiny as his daddy had. He swallowed all of his children including these three. But they escaped from him somehow. Then they killed Chronos.

Zeus became the president god. Yeah his all dammit power is ruling. Meanwhile Poseidon became lord of 7 seas. We call them as oceans. Pirates call them as 7 seas as well.

Hades became the ruler of underworld. But it is literally under the world. Under the top layer of earth there is Tartarus and from Tartarus to underworld there is a river. Tartarus is a giant living cave. Even gods can't escape from there. Also it is a child of Gaia.

Anyways, because Zeus was a fucking weakling, Hephaestus the famous god weapon blacksmith made a lightning weapon for him. Hephaestus is an abomination according to Illiad and Odyssey. His upper body is larger and lower body is small. All gods on olympos bully him. Sometimes Hephaestus invite gods to his home and serve drinks them.

Chronos was force into Tartarus by Gaia and Hades as well as other major gods such as Zeus as Gaia had just as much power as Zeus in the underworld due to it being part of the astral plane. Chronos had power of time bending. He was that powerful and his power wasn't bound to an area such as earth. I bet he can jump in time and got rid of his fate. But he is darn idiot. He has power but no brain.

Tartarus is known as a timeless prison. He can freeze others in time as well. So chronos had no power there (that theory changes in different sources). Gaia was much weaker in hell but could, in a sense, bend time due to her being a parent of Chronos.

Meanwhile Prometheus made the first human by stealing eternal fire. He called them as Prometheans. But they were abominations made of mud and clay. Prometheus was the first demi-god. He was a titan. But he got caught and punished to eternal ending-resurrection. Animals were eating his organs alive and they were healing. He is one of those figures that changes massively based on the tale as he was a demi-god and forced to be chained to a rock while being tortured. But he is a titan. Titans never slept with creatures as far as I know. There was no human in that generation. But Zeus slept with all species and several gods. He has countless, god, demi-god and creature children. It is a gigantic harem.

So what do we learn from this?

Zeus is like the god version of Rasputin.

Trying out new suppliers is often the way to go if you want to discover all possibilities. The company Saal Digital (@saal_digital) recently gave me that opportunity and offered me to test one of their products.

Starting with checking out their website confused me a bit because I saw all the nicely presented products including examples and price tables but nothing where you can start uploading your photos you wish to get some prints from. The only way I could find in the first place was by downloading their software. I don't want to loose too many words about it here but it is nice and easy to understand. By using it you're able to work on your projects offline — which is important for me because I'm often working away from home. My order was delivered within the next three days which I also appreciated.

To come to the photo book itself, I have to say that I ordered pretty much the smallest version you can get — I just wanted to test it out to be able to decide if I can take Saal Digital into consideration in future or not.

My ordered photo book is printed on artpaper. The pages are held together by a spiral binding. The paper has a nice texture which feels great and kind of soft. It gives the product a professional touch. To check the reproduction of tones, I've chosen photos with a decent variety of colors. They are on point and not over or under-saturated. I also included some photographs with a black backdrop. Unfortunately they turned out a bit underwhelming. Pure black doesn't look as deep as it should. I guess its because of the paper type and a glossy choice would have represented the blacks more accurately. All pages including front and back are printable from edge to edge — even the parts covered by the spiral binding. I really like that. The book is protected by matt but transparent plastic sheets.

The photobook

To come to a conclusion I can say that Saal Digital is offering high quality and cleanly processed products to present your work. Next time I would pay more attention to available paper types if I want really deep blacks on my prints. Below you can see some photos of the book.