Mechanomaniac

To the optimist, the glass is half full. To the pessimist, the glass is half empty. To the engineer, the glass is twice as big as it needs to be.

[apricot-studies]

An Infographic Of Useful Tips For All Types Of Learners

[mindelevator]

Link to my study tips series (strive-for-da-best)

[studying-queen-blog]

I recommend this so much. Bless your soul.

[the-future-now-deactivated20170]

Learning to catch, robo-style. Follow @the-future-now

[the-future-now-deactivated20170]

Follow @the-future-now​

[catsbeaversandducks]

“Let’s be cute together!”

Photos by ©Anya Yukhtina

[personality-studies]

MBTI’s Highest Activity Regions on Electroencephalogram (EEG)

 Rationals

Artisans

Guardians

Idealists

BONUS EEG!

ENFJ are pretty easy to embarrassed. On the other hand INTP’s region are pretty hard to activate. Generally speaking, that region is quite dark. But when they do get embarrassed, oh boy, it floods over to the other neighbouring regions! It even effected the region that are responsible for dexterity (that explained why they become klutzy af when they get embarrassed).

(Based on Dario Nardi’s book, “Neuroscience of Personality: Brain Savvy Insights for All Types of People “ and his Google Talk Conference. If you have 85 minutes to spare, I highly recommended you watch the video! Really good stuff  :D)

[infjpersonality]

Very cool!

[trigonometry-is-my-bitch]

Here is a semester project in the 2012 Mechatronic control systems engineering module at San Jose State University. This is a Proportional-Integral-Derivative controlled (PID), 6 degree of freedom (6-DOF) Stewart platform, which basically means it has six axes on the top plate. This prototype uses 6 radio controlled servo motors instead of the traditional use of hydraulic jacks or electronic actuators. (this video has sound)

Proportional-Integral-Derivative:

A PID controller continuously calculates an error value as the difference between a measured process variable and a desired setpoint. The controller attempts to minimize the error over time by adjustment of a control variable, such as the position of a set of servo motors or actuators,  to a new value, given by a weighted sum:

where Kp ,Ki , and Kd, all non-negative, denote the coefficients for the proportional, integral, and derivative terms, respectively (sometimes denoted P, I, and D).

P accounts for present values of the error , and is determined by the direction and magnitude the correction needs to be applied (e.g. if the error is large and positive, the control variable will be large and negative),

I accounts for past values of the error (e.g. if the output is not sufficient to reduce the size of the error, the control variable will accumulate over time, causing the controller to apply a stronger action through P), and

D accounts for possible future values of the error, based on its current rate of change. This part determines when and at what rate it needs to reduce the magnitude of its action, e.g as the ball fast approaches the desired set point at the centre of the plate.

[source]

[hydrogeneportfolio]

The complete ‘Women Who Changed Science - And The World" collection in honor of the 95th Women’s Equality Day.

Purchase Here!

[sagansense]

#WomenInScience

[fyphysica]

Gyroscopic wired animals

Chickens, Cats, Owls and some more animals have this ability to keep their heads fixed on a spot, regardless of which way you hold their bodies. It is as though they have an in-built gyroscope in their heads.

They are able to do this, courtesy of the Vestibulo-ocular Reflex. (a reflex where the head and eyes remain fixed on a point, as long as doing so puts no undue stress on the rest of the body.)

This allows them to feel the force generated in an attempt to change their orientation and automatically rearrange their head’s position.

Humans have it too.

Humans are wired with a similar feature too. But ours is specifically geared towards keeping our eyes on a fixed point.

We wouldn’t be able to read words while moving our heads, or even take walks without some loss of vision.

Nature is fascinating, isn’t it?

In every walk in nature, one receives far more than one seeks - John Muir

Have a Good Day!

PC: Smartereveryday, MieciaTheCat,   Alex Holcombe

[stayeduplateagain]

One time in class we were talking about abortion and most of the girls talking were pro-choice and it was a generally calm discussion then one of the pro-life boys used the phrase

“if a girl is stupid enough to get herself pregnant in the first place-“

…he didn’t get to finish the sentence

[zapidos]

THAT GIF

[linadono]

Incredible

[themathkid]

Math-themed playing cards by  Diana Stanciulescu. I’d really like to know why the hell Gauss isn’t on a king card, though. 

[sweetteascience]

I love everything about these! I wonder how different Stats-themed cards would be.

[allofmymaths]

The only set of cards I would sell my soul for probably

[jksgone]

Omg i want this so bad :)

[fyphysica]

Gravity pwned - Acoustic Levitation. 

Humans have been pwning gravity from time immemorial- desperately trying to break free from its clutches. And time and again we have found ways to accomplish this. And to use Acoustics to float things around is just elegant.

Standing waves

A standing looks like the one below. It gives us an illusion of Stillness .i.e unlike any rational wave that we know  it does not seem to traveling anywhere.

The Sorcerous magician’s priced spot- The node

As you can see, there are places in the waves where there is very less activity ( the red dots ), these are known as the nodes. The region of maximum activity are known as anti-nodes.

You place a water droplet right in the node, where there is very less pressure, the droplet is going to levitate! Why? Well, the particle is locked in place because of the presence of a high-pressure region above and below it. This seals the object in place. That’s the basic working principle.

The Illusion of Stillness

But this is all an illusion! These are formed indeed by moving waves. How you ask?

Tweak the reflection and interference just right ( by adjusting the length of the reflector) and Bam! You have a standing wave! 

Invert the wave apparatus 90 degrees and now you have an Acoustic Levitator. I love the Soniclevitation’s neat illustration of how it all works. 

Acoustic Levitation - An analogy.

HowStuffWorks elucidates this phenomenon with an elegant river analogy:

Imagine a river with rocks and rapids. The water is calm in some parts of the river, and it is turbulent in others.

Floating debris and foam collect in calm portions of the river. In order for a floating object to stay still in a fast-moving part of the river, it would need to be anchored or propelled against the flow of the water. 

This is essentially what an acoustic levitator does, using sound moving through a gas in place of water.

How big an object can you levitate?

I know what you guys might be thinking - How about an Acoustically levitated Hoverboard? Well, a lot of research has been in progress and we have gotten pretty far from levitating merely droplets of water and styrofoam balls. 

In fact, we have gone 3D with added maneuverability. 

I will leave you guys with the research work done by a team at the University of Tokyo titled - “Three-dimensional Mid air acoustic manipulation”.

If you still crave for more- Check out the research work on Acoustic Tweezers.

Have a good one :)

[umerr-deactivated20170526]

This picture makes me sad.

[animeadult]

ppl are so interested in aliens but how would they expect to learn about cultures from different planets/solar systems if they can’t even accept different cultures on ya own damn planet from your own damn species

[lingly]

Visit Original Link

[jksgone]

I love this. I want more

[klancelicious-moved-blog]

[roses-overhead]

project this video onto my tombstone

[jksgone]

Beautiful ending. Loved it. 

[thewriterkb]