Photo
trigonometry-is-my-bitch:

How a hole is drilled to be made square. The red shape in the center would be the cutting tool.
it shares the same principle as a Reuleaux triangle but with one rounded corner so that the cut square does not have rounded edges; the cutting tool follows the path of the rounded edge that is tangent to the sides of the outer square. because a tangent line is perpendicular to the radius, as the cutting tool follows the path of the rounded edge it turns precisely 90° to create a sharp edged perfect square.

This drills a square hole - your argument is invalid!

trigonometry-is-my-bitch:

How a hole is drilled to be made square. The red shape in the center would be the cutting tool.

it shares the same principle as a Reuleaux triangle but with one rounded corner so that the cut square does not have rounded edges; the cutting tool follows the path of the rounded edge that is tangent to the sides of the outer square. because a tangent line is perpendicular to the radius, as the cutting tool follows the path of the rounded edge it turns precisely 90° to create a sharp edged perfect square.

This drills a square hole - your argument is invalid!

(via visualizingmath)

Video

Sir Isaac Newton vs Bill Nye
Epic Rap Battles of History

Clearly, science is the winner here. Who said science isn’t fun :)

Link

TL;DR

1) Setup a New Server (ServerC)
2) On ServerC, Install MySQL (same version as ServerB)
3) On ServerC, service mysql stop
4) Copy /etc/my.cnf from ServerB to ServerC
5) On ServerC, change server_id to a value different from ServerA and ServerB
6) rsync /var/lib/mysql on ServerB to ServerC
7) When rsync is completed, run “STOP SLAVE;” on ServerB
8) rsync /var/lib/mysql on ServerB to ServerC
9) On ServerB, run “START SLAVE;”
10) On ServerC, service mysql start
11) On ServerC, run “START SLAVE;” (Do this if skip-slave-start is in /etc/my.cnf)

Apart from what Mr. Rolando outlined, I had to create an extra slave_user on the master with the correct host address and also copy the logs /var/log/mysql from server B to server C. Because the server was complaining about not being able to read the bin-logs.

But this method works :)

Photo
pachanka:

One of the mysteries of my youth debunked!

pachanka:

One of the mysteries of my youth debunked!

(Source: The Globe and Mail)

Photoset

Caught a snake. DIY apparatus! This is my excuse for being late for work.

Photo
pachanka:

Undead Code.

Or too afraid to delete it because you don’t know what it does

pachanka:

Undead Code.

Or too afraid to delete it because you don’t know what it does

Photo
garden-of-vegan:

Toasted sprouted grain bread with peanut butter, apple slices, raisins, hemp hearts, and cinnamon.

How the heck you eat this without dropping the raisins..?

garden-of-vegan:

Toasted sprouted grain bread with peanut butter, apple slices, raisins, hemp hearts, and cinnamon.

How the heck you eat this without dropping the raisins..?

Photo
throughascientificlens:

The Relationship of Numbers

Today I wanted to share something with you, it’s not complex, but I was reminded of it today in maths class and it struck me as beautiful and nice and I figured I’d remind you of it, too.
In the diagram above you can see there are six circles, each which a family of numbers assigned to it. What I find fascinating is the easy steps one can take to move from the most inner circle to the most outer.
Natural Numbers:These were the first numbers we had and used as a species: 1, 2, 3, 4, etc.
Whole Numbers:This is essentially the same as the natural numbers, but now one key number is included: 0.
Integers:Using our whole numbers we can use division or subtraction to move to this new set which includes the negative numbers: -2, -1, 0, 1, 2
Rational Numbers:These numbers can be made by dividing one integer by another. Note: the denominator cannot be zero in this function. Rational numbers include decimals. Eg. 2/4 = 0.5
Irrational Numbers:This circle sitting on its lonesome is a group of numbers which cannot be written in simple fraction form. They are infinitely long and consist of non-repeating series of numbers. Examples of irrational numbers are pi, e and the square root of two.
Real Numbers:All of these groups put together form a group which is designated ‘real numbers’. All of these numbers exist, so to say.
Imaginary Numbers:One group which was left off this diagram is the imaginary numbers. These numbers, while they have real life applications, have no physical representation. Eg. the square root of negative one.

Photo courtesy of Real Numbers Unit

Square root of negative one has to be the best number ever!

throughascientificlens:

The Relationship of Numbers

Today I wanted to share something with you, it’s not complex, but I was reminded of it today in maths class and it struck me as beautiful and nice and I figured I’d remind you of it, too.

In the diagram above you can see there are six circles, each which a family of numbers assigned to it. What I find fascinating is the easy steps one can take to move from the most inner circle to the most outer.

Natural Numbers:
These were the first numbers we had and used as a species: 1, 2, 3, 4, etc.

Whole Numbers:
This is essentially the same as the natural numbers, but now one key number is included: 0.

Integers:
Using our whole numbers we can use division or subtraction to move to this new set which includes the negative numbers: -2, -1, 0, 1, 2

Rational Numbers:
These numbers can be made by dividing one integer by another. Note: the denominator cannot be zero in this function. Rational numbers include decimals. Eg. 2/4 = 0.5

Irrational Numbers:
This circle sitting on its lonesome is a group of numbers which cannot be written in simple fraction form. They are infinitely long and consist of non-repeating series of numbers. Examples of irrational numbers are pi, e and the square root of two.

Real Numbers:
All of these groups put together form a group which is designated ‘real numbers’. All of these numbers exist, so to say.

Imaginary Numbers:
One group which was left off this diagram is the imaginary numbers. These numbers, while they have real life applications, have no physical representation. Eg. the square root of negative one.

Photo courtesy of Real Numbers Unit

Square root of negative one has to be the best number ever!

(via visualizingmath)

Text

Current future

superpunch2:

Link

naked-cities:

Here’s a list of engineering blogs from well-known companies. They are a good source of ideas and information.