Category Archives: Science

Sir Isaac Netwotn’s three laws of motion. Three states of matter (solid, liquid, gas). We live on the third rock from the sun. Our metric system of measurement uses metre, litre, and gram. Morse code is a reliable system as the signal is made up of only three parts – a long ‘on’, the dash; a short ‘on’, the dot; and an ‘off’ signal. Do you know what SOS means in Morse code?

Three ways to see an atom

A remarkable photo of a single atom trapped by electric fields has just been awarded the top prize in a well-known science photography competition. The photo is titled “Single Atom in an Ion Trap” and was shot by David Nadlinger of the University of Oxford
A remarkable photo of a single atom trapped by electric fields has just been awarded the top prize in a well-known science photography competition. The photo is titled “Single Atom in an Ion Trap” and was shot by David Nadlinger of the University of Oxford.

If there is no way in the world to see an atom, then how do we know that the atom is made of protons, electrons, neutrons, the nucleus and the electron cloud?

There are three ways that scientists have proved that these sub-atomic particles exist. They are direct observation, indirect observation or inferred presence and predictions from theory or conjecture.

Atomic model
Atomic model

Scientists in the 1800’s were able to infer a lot about the sub-atomic world from The Periodic Table of Elements by Mendeleyev gave scientists two very important things. The regularity of the table and the observed combinations of chemical compounds prompted some scientists to infer that atoms had regular repeating properties and that maybe they had similar structures.

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3-click rule — the magic number – UX Collective

3-click rule — the magic number

A maximum of information in a minimum of words.

UI UX design
UI UX design

This is a particularly deep belief for your graphic designer friends for 10 years, but we have come a long way, and the usability tests have shown it for a while…

I will not lie to you any longer, users of your services will not leave your site or application if they can not find the information they are looking for in 3 clicks.

The number of clicks needed does not affect the success rate and even less the satisfaction of users: the important thing is to have a smooth, easy and understandable navigation (yes, the rules of 3 adjectives affect me too).

The scent of information

The concept is a simple idea and quite primitive as the name suggests : to have a good hunt, you must follow a good smell!

On a website or an application, the smell will take shape with the content, scented with confidence, the right word, the good image.

A little like my previous article about form field (Form fields — Required vs Optional), never forget that the most important thing when designing a product is to give the user the feeling of being in the center of all the expectations.

It’s a bit like setting a trap for a hungry bear, bait him, feed him to your final goal and he will follow you without even realizing it.

The key is your content: put it in value, coated to bring your user to be tempted to immerse himself in it and especially not let him lose The scent of information !

Once lost, the user hesitates, it becomes difficult for him to finish the action, and he will eventually notice the number of clicks you ask him to do.

Do not waste time worrying about the number of clicks, worry about the scent of information.

Disclamer :

I already see the crowd of designer dissatisfied ‘yes that’s fine theory, but when you can do 2 click instead of 6 is better no?’

YES, of course, this article is meant to make you think, to give you concrete information about the different studies done about the 3 clicks rule, but do not get me wrong, when you can do 2 clicks instead of 6 without spoiling the navigation experience, made it, but do not forget The scent of information.

Jordane SamsonJordane Samson
Head of design @gojob - 
#UX provider. For more from jordane sanson and to follow him select the link below:

Buckminster Fuller explains threeness in the Universe

Buckminster Fuller
Buckminster Fuller

Buckminster Fuller

  1. The stability of the triangle
  2. The one quantum created in the tetrahedron
  3. How the icosahedron, the octahedron and tetrahedron create everything in the universe

ORM – object relational mapping

Object Relational Mapping
Object Relational Mapping
ORM (Object-relational mapping) in computer science is a programming technique for converting data between incompatible type systems using object-oriented programming languages. This creates, in effect, a “virtual object database” that can be used from within the programming language.
Source: Wikipedia

Difference Between Fartlek, Tempo, and Interval Runs? | Runner’s World

Here’s a quick breakdown of these three major types of speed workouts.

Fartleks, That’s fun to say
Fartleks, That’s fun to say. Elf.

Hi Jenny, I just read your article, ‘What Should I Do During the Off Season?’. Very helpful, thanks! Could you briefly explain to me the difference between fartlek, tempo, and interval runs? Thanks! Mary

Hi, Mary. Thanks for the kudos. Ask and you shall receive: Here is a brief 411 on fartlek, tempo, and interval workouts.

Fartlek Workouts are not only fun to say out loud, but they’re fun to run. Fartlek is Swedish for “speed play,” and that is exactly what it’s all about. Unlike tempo and interval work, fartlek is unstructured and alternates moderate-to-hard efforts with easy throughout. After a warmup, you play with speed by running at faster efforts for short periods of time (to that tree, to the sign) followed by easy-effort running to recover. It’s fun in a group setting as you can alternate the leader and mix up the pace and time. And in doing so, you reap the mental benefits of being pushed by your buddies through an unpredictable workout. The goal is to keep it free-flowing so you’re untethered to the watch or a plan, and to run at harder efforts but not a specific pace.

Benefits: Stress-free workout that improves mind-body awareness, mental strength, and stamina.

Continue reading Difference Between Fartlek, Tempo, and Interval Runs? | Runner’s World

The Experience of Learning

The process of learning is an important and implicit part of the users’ interaction with products, both in a digital and non-digital realm. It is a continuous process, regardless of their level of expertise or previous familiarity with the subject matter. It begins with the users’ initial interaction with the product and continues all the way through as most advanced functions and features are learned. An effective learning experience can greatly enhance the users’ overall experience with the product.

The action of learning is a three-step process, comprised of Information Acquisition, Information Processing and Information Cataloging/Action Taking. Let’s take a look at what is involved in each of these three steps.

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The Three Development Paradigms: Procedural, Object-Oriented, and Functional | WPShout

When you’re brand new to development in PHP or JavaScript, you don’t really need or want to think too hard about programming paradigms. You just want to get things to work. And that makes a lot of sense. But eventually as you go along, you start to wonder. What’s this “OOP” thing people seem obsessed with? Am I doing that? Should I be?

Fundamentally, this article is for people in a place like that. Our goal today is to clarify what these three major paradigms in software development are, how they relate to each other, and which you’ll want to use when. Contrary to popular belief, there isn’t a “right” or “wrong” answer ever.

Before we start breaking down all the programming paradigms we’ll cover, it makes sense to be clearer about what we mean by “paradigms”. To cite a definition which is relevant, the American Heritage Dictionary says a paradigm is:

A set of assumptions, concepts, values, and practices that constitutes a way of viewing reality for the community that shares them, especially in an intellectual discipline

Continue reading The Three Development Paradigms: Procedural, Object-Oriented, and Functional | WPShout

Difference Between SPF and UPF Rating System –


SPF vs. UPFSummary of all major differences between SPF and UPF rating systems. What you need to know about SPF and UPF.

Both SPF (Sun Protection Factor) and UPF (Ultraviolet Protection Factor) are standards used to measure sunburn protection. SPF, the standard used to measure the effectiveness of sunscreens, has been around for many years. The UPF system is relatively new and was created specially for sun protective fabrics. At first, American sun protective fabrics were rated using the SPF standard until the FTC finalized the UPF standard we have today. Use of the UPF standard is voluntary so some sun protective fabric manufactures still use the SPF system.

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Four triangular faces along with six edges meeting at four vertices together describe the regular tetrahedron. The tetrahedron is the root of all entanglements that shape the perceivable bonds that hold life together in this dimension. The regular tetrahedron can be found at the source of all three-dimensional forms and is fundamental in the creation of all patterns and holographic configurations.

“All of the definable structuring of Universe is tetrahedrally coordinate in rational number increments of the tetrahedron. By tetrahedron, we mean the minimum thinkable set that would subdivide the Universe and have the interconnectedness where it comes back upon itself. The basic structural unit of physical Universe quantation, tetrahedron has the fundamental prime number oneness.”

Buckminster Fuller

“Within it (tetrahedron) lies the energy that holds all life together. The bonds that hold atoms, particles and molecules together, all the way down to nanoparticles and all the way up to macroparticles, are tetrahedral. Everything that exists as you conceive of it in a 3-dimensional world, is held together by these tetrahedral bonds.”

Buckminster Fuller

“The tetrahedron is a form of energy package. The tetrahedron is transformable…All of the definable structuring of Universe is tetrahedrally coordinate in rational number increments of the tetrahedron.”

Buckminster Fuller

2 Triangles forming a Tetrahedron
2 Triangles forming a Tetrahedron

“Two Triangular Energy Events Make Tetrahedron: The open-ended triangular spiral can be considered one “energy event” consisting of an action, reaction and resultant. Two such events (one positive and one negative) combine to form the tetrahedron.”

Buckminster Fuller