пятница, 29 октября 2021 г.

Our Galaxy is Caught Up in a Giant Cosmic Cobweb!

 


If we could zoom waaaay out, we would see that galaxies and galaxy clusters make up large, fuzzy threads, like the strands of a giant cobweb. But we'll work our way out to that. First let's start at home and look at our planet's different cosmic communities.

Our home star system

Earth is one of eight planets — Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune — that orbit the Sun. But our solar system is more than just planets; it also has a lot of smaller objects.



An asteroid belt circles the Sun between Mars and Jupiter. Beyond Neptune is a doughnut-shaped region of icy objects called the Kuiper Belt. This is where dwarf planets like Pluto and Makemake are found and is likely the source of short-period comets (like Haley’s comet), which orbit the Sun in less than 200 years.

Scientists think that even farther out lies the Oort Cloud, also a likely source of comets. This most distant region of our solar system is a giant spherical shell storing additional icy space debris the size of mountains, or larger! The outer edge of the Oort Cloud extends to about 1.5 light-years from the Sun — that’s the distance light travels in a year and a half (over 9 trillion miles).


Sometimes asteroids or comets get ejected from these regions and end up sharing an orbit with planets like Jupiter or even crossing Earth’s orbit. There are even interstellar objects that have entered the inner solar system from even farther than the Oort Cloud, perhaps coming all the way from another star!

Our home galaxy

Let's zoom out to look at the whole Milky Way galaxy, which contains more than 100 billion stars. Many are found in the galaxy’s disk — the pancake-shaped part of a spiral galaxy where the spiral arms lie. The brightest and most massive stars are found in the spiral arms, close to their birth places. Dimmer, less massive stars can be found sprinkled throughout the disk. Also found throughout the spiral arms are dense clouds of gas and dust called nebulae. The Sun lies in a small spiral arm called the Orion Spur.


The Milky Way’s disk is embedded in a spherical “halo” about 120,000 light-years across. The halo is dotted with globular clusters of old stars and filled with dark matter. Dark matter doesn’t emit enough light for us to directly detect it, but we know it’s there because without its mass our galaxy doesn’t have enough gravity to hold together!

Our galaxy also has several orbiting companion galaxies ranging from about 25,000 to 1.4 million light-years away. The best known of these are the Large and Small Magellanic Clouds, which are visible to the unaided eye from Earth’s Southern Hemisphere.

Our galactic neighborhood



The Milky Way and Andromeda, our nearest neighboring spiral galaxy, are just two members of a small group of galaxies called the Local Group. They and the other members of the group, 50 to 80 smaller galaxies, spread across about 10 million light-years.

The Local Group lies at the outskirts of an even larger structure. It is just one of at least 100 groups and clusters of galaxies that make up the Virgo Supercluster. This cluster of clusters spans about 110 million light-years!


Galaxies aren’t the only thing found in a galaxy cluster, though. We also find hot gas, as shown above in the bright X-ray light (in pink) that surrounds the galaxies (in optical light) of cluster Abell 1413, which is a picturesque member of a different supercluster. Plus, there is dark matter throughout the cluster that is only detectable through its gravitational interactions with other objects.

The Cosmic Web

The Virgo Supercluster is just one of many, many other groups of galaxies. But the universe’s structure is more than just galaxies, clusters, and the stuff contained within them.


For more than two decades, astronomers have been mapping out the locations of galaxies, revealing a filamentary, web-like structure. This large-scale backbone of the cosmos consists of dark matter laced with gas. Galaxies and clusters form along this structure, and there are large voids in between.

The scientific visualizations of this “cosmic web” look a little like a spider web, but that would be one colossal spider!

And there you have the different communities that define Earth’s place in the universe. Our tiny planet is a small speck on a crumb of that giant cosmic web!

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пятница, 22 октября 2021 г.

Most popular first names in the world


 

Occam’s Razor: The simplest solution is always the best


by Mads Soegaard |


Now that we appreciate the need for simplicity in designs better, let’s see another great concept. You may have heard of Occam’s Razor; did you know that you can apply it to web design? When you’ve got it in your “toolbox”, you’ll have an edge in the marketplace.

Occam’s Razor, put simply, states: “the simplest solution is almost always the best.” It’s a problem-solving principle arguing that simplicity is better than complexity. Named after 14th-century logician and theologian William of Ockham, this theory has been helping many great thinkers for centuries. Many industries swear by it.

How to Use in Design

In design, Occam’s Razor encourages us to eliminate unnecessary elements that would decrease a design’s efficiency. So, when two products or designs have the same function, Occam’s Razor recomends selecting the simpler. Therefore, when evaluating your designs, analyze each element and remove as many as possible, without compromising the overall function. This should ensure that you remain with elements you have minimized as much as possible but which still work perfectly


With the flexibility and power of the web and our design tools, it’s easy to get carried away. Designers can end up making very complicated sites or designs that may have a lot of functionality and information, but are difficult to use, build and maintain. One might think the site can do more, but it actually accomplishes less.

This is commonly an issue where companies feel the need to put everything they possibly could up on the website in the rare case that someone wants the information. In an increasingly competitive market, the pressure is on to get the message “out there”. What companies often ignore is that the overwhelming majority of the users will access about 20% of the content on the site (see the article on the Pareto principle; you’ll find the link at the bottom). Being ruthless about the value that a page or piece of content provides and removing anything unnecessary will make significantly stronger, more effective designs. It may be hard to weed out those unnecessary parts — you may say your business has no unnecessary parts; look harder.

For designers, using Occam’s Razor is all about careful thinking. It easier than you might fear. For instance, an editor-author who has a fiction career, but who also ghostwrites for clients, calls us. She tells us what she wants in her design:

  • Big handwritten font — autograph

  • Her photograph

  • Large-font mission statement

  • Contact information

  • Picture of the ranch where she works

  • Daily writing tip box.

Right away, we see we’ve got much to work into her design. Our author insists on an elaborate, decorative landing page. She loves her ranch and believes other writers will love it, too, so she wants a large photo of it.

We have to decide how to prioritize these elements. So, let’s see what’s necessary:

  • Author’s photograph

  • Signature/autograph—her branding

  • Mission statement.

These three parts embody her service. We want to present a famous author who can help other writers. However, we can move the unnecessary components to other pages using link buttons:

  • Daily writing tips

  • Contact Information

  • Picture of ranch.

We can show the ranch with her contact information, and we can perhaps design a daily writing tip as a pop-up.

The phone goes; our author loves what we’ve done with the design. However, she wants her ranch to feature on the landing page. We say: “We’ll see what we can do.”

Using Occam’s Razor, we see that we can fade the ranch into the background so that the images are there, but don’t distract. We want to cut out “noise”, which would distract/confuse users. So, we remove everything that would have got in the way. Our author friend is an enthusiastic person, but her enthusiasm gets the better of her. She’s scared of writers not contacting her. That’s the problem: she’s trying to push all her goodies onto the landing page, not appreciating that the flood of information will make user’s go: “What?” Instead of showing her good name and service in the best way, she got desperate and tried to squeeze ideas in, making a maze — walls, pictures, text, and spaces sprawling everywhere. Users coming to her site want help; they don’t want to have to work out how she can help them. Worse, it would tell them that this person can’t get ideas across properly. Why should they want her to write for them?

Occam’s Razor cuts down the walls that keep a message from getting through. Also, this rule speaks to the age-old saying that “A design isn’t finished when there is nothing more to add, but when there is nothing left to take away.” Design simplicity is elegant, sophisticated and much more effective than the complex decorative style that is so prevalent on the web these days.

Simplicity shows care, understanding and effort

Author/Copyright holder: 62 Models. Copyright terms and licence: Fair Use

It’s easy to think that the words “simple” and “easy” might show a lack of sophistication, or that working to produce simple designs means you don’t have to work very much. You might worry that a client will think that it took you 10 minutes to design something that he/she could have made.

Let’s do a reality check. Our author-ghostwriter has noticed the high number of hits her site is getting. She certainly doesn’t think that we’ve been lazy; she knows that we worked magic for her. The proof is in the number of page views — users have found it easy to navigate. Instead of shutting off on the landing page after squinting in confusion, many went on to learn more. The design’s simplicity, showing images and text in the best way (remember the other design principles here, such as the golden ratio), puts them at ease. They have a good user experience; most see her site’s simple, comprehensive design reflecting her skill as a no-nonsense writer who’ll work the same magic for them.

With this in mind, we can pat ourselves on the back for having done it for her. However, let’s look at what we did. We:

  • Asked how many elements the landing page needed, including choices or decisions our friend wanted users to make. She wanted them to click on her daily writing tip box so they could see previous days’ tips. We linked this elsewhere.

  • Asked what she wanted her users to do the most. She wanted people contacting her for help writing books. So, we highlighted the contact box, but we added one that took users to another page, where they could read all about her services first. This information was far more detailed than the simple description we put on her landing page: “Making manuscripts move into book and movie deals.”

  • Asked if a user, regardless of background, could get confused/frustrated. Her initial concept was confusing. We imagined approaching the design as ordinary people. Our friend wants to help other writers; well, if an 88 year-old author is looking for someone to clean up his manuscript, he might have had trouble with her design.

In summary, we translated what the writer wanted into a website that was easy to understand and use for the target users. Keeping in mind Occam’s razor, we focused on the key elements and keeping the interface simple.

The Internet is saturated with intricate and exquisitely complex designs. Many flash at us, offering all sorts of benefits, their designers not aware that it’s distracting, commonplace, and cheap-looking, Simplicity is refreshing.

Keeping Accessibility in Mind

Keeping our designs simple means that the websites we build are accessible. Creating a simple layout, with carefully placed images (remember the Rule of Thirds?) and simple, to-the-point, pithy text will keep users on the page.

Author/Copyright holder: Polar Gold. Copyright terms and licence: Fair Use

What gets them navigating to the call for action, such as the shopping cart depends on how you guide them. Did you:

  • Shave off the unnecessary bits?

  • Tone down anything loud or distracting?

  • Use plain language?

  • Would my 80 year-old neighbor understand what the website is about?

  • Would my grandmother be able to buy what I offer through my site and feel good?

Or, you can always make a “reality check”:

And above all, will my users understand the website’s added value and how it targets their needs and desires?

The Take Away

Occam’s Razor is a problem-solving principle devised in the 14th Century that states that simplicity is better than complexity. It has many applications, running from detective work to deductive reasoning about the cosmos.

We UX designers find that it empowers us to aim past the tendency to over-think our designs. It’s easy to focus on a cool idea, without standing back and asking if it’s essential to what we want to achieve. Occam’s Razor lets us approach and plan a design carefully. Our tendency is to keep adding what seem like great elements, sometimes worrying that if we don’t get all we want in one place, we’ll fail by a) weakening the message, or b) looking lazy.

Think of Apple. Steve Jobs’ philosophy embraced Occam’s Razor. His iPad and iPhone, for example, are the proof: one button on the front of a seamless, self-contained device.

By asking ourselves a few questions about our design and our users’ expectations, and reacting accordingly, shaving off the clutter or moving less important bits to other pages, we’ll serve our users and ourselves best. Remember, your design isn’t ready until you’ve found that you can’t take anything else out. This isn’t like repacking a suitcase to match a weight limit; it’s about deconstructing your design. When you’ve got your piece down to its bare essentials, that economy will pay dividends. By getting in ahead of your user’s eye, you can judge. Their page views and clicks will tell you if you’ve made the right choices.

Okay, so you’ve made it all the way here but you’re thinking: “I live by the principle of the simplest solution is always the best”. Where’s my take away? Now that you have a name for this principle, it is yet another advocacy tool to user with your client, boss, colleague. Whenever they insist about adding more functionalities, more elements, more and more, remind them of the Occam’s Razor.

References & Where to Learn More

Duvall, A. (2015). “Taking the Occam Razor Approach to Design.” Speckyboy Design Magazine. Retrieved from: http://speckyboy.com/2015/05/21/taking-the-occam-razor-approach-to-design/

McConnell, C. (2010). “Occam’s Razor: A Great Principle For Designers.” Web Designer Depot. Retrieved from: http://www.webdesignerdepot.com/2010/07/occams-razor-a-great-principle-for-designers/

Lant, M. (2010). “Occam’s Razor and the Art of Software Design”. Private Blog. Retrieved from:

http://michaellant.com/2010/08/10/occams-razor-and-the-art-of-software-design/

The Pareto Principle and Your User Experience Work: https://www.interaction-design.org/literature/arti...

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All the Metals We Mined

 

By 


This was originally posted on Elements. Sign up to the free mailing list to get beautiful visualizations on natural resource megatrends in your email every week.

Metals are all around us, from our phones and cars to our homes and office buildings.

While we often overlook the presence of these raw materials, they are an essential part of the modern economy. But obtaining these materials can be a complex process that involves mining, refining, and then converting them into usable forms.

So, how much metal gets mined in a year?

Metals vs Ores

Before digging into the numbers, it’s important that we distinguish between ores and metals.

Ores are naturally occurring rocks that contain metals and metal compounds. Metals are the valuable parts of ores that can be extracted by separating and removing the waste rock. As a result, ore production is typically much higher than the actual metal content of the ore. For example, miners produced 347 million tonnes of bauxite ore in 2019, but the actual aluminum metal content extracted from that was only 62.9 million tonnes.

Here are all the metals and metal ores mined in 2019, according to the British Geological Survey:

Metal/OreQuantity Mined (tonnes)% of Total
Iron Ore3,040,000,00093.57%
Industrial Metals207,478,4866.39%
Technology and Precious Metals1,335,8480.04%
Total3,248,814,334100%

Miners produced roughly three billion tonnes of iron ore in 2019, representing close to 94% of all mined metals. The primary use of all this iron is to make steel. In fact, 98% of iron ore goes into steelmaking, with the rest fulfilling various other applications.

Industrial and technology metals made up the other 6% of all mined metals in 2019. How do they break down?

Industrial Metals

From construction and agriculture to manufacturing and transportation, virtually every industry harnesses the properties of metals in different ways.

Here are the industrial metals we mined in 2019.

MetalQuantity Mined (tonnes)% of Total
Aluminum62,900,00030%
Manganese Ore56,600,00027%
Chromium Ores and Concentrates38,600,00019%
Copper20,700,00010%
Zinc12,300,0006%
Titanium (Titanium Dioxide Content)6,300,0003%
Lead4,700,0002%
Nickel2,702,0001%
Zirconium Minerals (Zircon)1,337,0001%
Magnesium1,059,7361%
Total207,478,486100%
Showing 1 to 10 of 15 entries

Percentages may not add up to 100 due to rounding.

It’s no surprise that aluminum is the most-produced industrial metal. The lightweight metal is one of the most commonly used materials in the world, with uses ranging from making foils and beer kegs to buildings and aircraft parts.

Manganese and chromium rank second and third respectively in terms of metal mined, and are important ingredients in steelmaking. Manganese helps convert iron ore into steel, and chromium hardens and toughens steel. Furthermore, manganese is a critical ingredient of lithium-manganese-cobalt-oxide (NMC) batteries for electric vehicles.

Although copper production is around one-third that of aluminum, copper has a key role in making modern life possible. The red metal is found in virtually every wire, motor, and electrical appliance in our homes and offices. It’s also critical for various renewable energy technologies and electric vehicles.

Technology and Precious Metals

Technology is only as good as the materials that make it.

Technology metals can be classified as relatively rare metals commonly used in technology and devices. While miners produce some tech and precious metals in large quantities, others are relatively scarce.

MetalQuantity Mined in 2019 (tonnes)% of Total
Tin305,00023%
Molybdenum275,00021%
Rare Earth Elements220,00016%
Cobalt123,0009%
Lithium97,5007%
Tungsten91,5007%
Vanadium81,0006%
Niobium57,0004%
Cadmium27,5002%
Tantalum27,0002%
Total1,335,848100.00%
Showing 1 to 10 of 16 entries

Percentages may not add up to 100 due to rounding.

Tin was the most-mined tech metal in 2019, and according to the International Tin Association, nearly half of it went into soldering.

It’s also interesting to see the prevalence of battery and energy metals. Lithium, cobalt, vanadium, and molybdenum are all critical for various energy technologies, including lithium-ion batteries, wind farms, and energy storage technologies. Additionally, miners also extracted 220,000 tonnes of rare earth elements, of which 60% came from China.

Given their rarity, it’s not surprising that gold, silver, and platinum group metals (PGMs) were the least-mined materials in this category. Collectively, these metals represent just 2.3% of the tech and precious metals mined in 2019.

A Material World

Although humans mine and use massive quantities of metals every year, it’s important to put these figures into perspective.

According to Circle Economy, the world consumes 100.6 billion tonnes of materials annually. Of this total, 3.2 billion tonnes of metals produced in 2019 would account for just 3% of our overall material consumption. In fact, the world’s annual production of cement alone is around 4.1 billion tonnes, dwarfing total metal production.

The world’s appetite for materials is growing with its population. As resource-intensive megatrends such as urbanization and electrification pick up the pace, our material pie will only get larger.

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