You Cannot Fool Nature

Today 28 January 2016 is the 30th anniversary of the Challenger disaster. This event shocked the world and shook NASA out of its complacency. A commission was formed to investigate. Surprisingly there was only one scientist on the commission, Richard Feynman.

He filed a minority report which was nearly suppressed and also performed his famous experiment to show the failure of the O-rings used in the shuttle engines. Continue reading

Posted in Stuff | Leave a comment

Be very careful what you click

No, this not about clicking on silly click bait articles.

rats-nest-n8foo Against everything I know, I decided to quickly make a few changes and clean up the file stores on a vmware cluster. I was thinking maybe an hour or so tops and I can enjoy the rest of my Saturday. Continue reading

Posted in Stuff, Tech | Tagged , , , , , | Leave a comment

Cleaning up the worlds oceans with the longest floating object in history

An ambitious new project is hoping to help clean the world’s oceans with a trash collector that is reportedly the longest floating structure in recorded world history.

Back in 2013 TrueActivist reported that a 19-year-old developed a plan to clean up the world’s oceans in just 5 years, removing 7,250,000 tons of plastic. However, last week, Boyan Slat (now 21), founder and CEO of The Ocean Cleanup, announced that this awesome project will be deployed in 2016.

Ocean Cleaning system Image Credit: theoceancleanup.com Continue reading

Posted in Stuff, Tech | Tagged , , , , , , , | Leave a comment

The Analog to Digital Conversion Process

Hi I am Arnold Greyling from Johannesburg in South Africa. This is my peer review assignment for week 2 of the Introduction To Music Production course at Coursera.org. I will be discussing the Analog to Digital Conversion Process.

Introduction

Analog to Digital conversion is converting a physical value (voltage) to a digital value that represents that physical value. The following aspects of the Analog to Digital Conversion Process will be covered:
  • Representation of data in a computer and Word Length
  • Choosing the correct word length
  • Sampling Frequency
  • Choosing your Sampling Frequency
  • The Analog to Digital Conversion Process is also known as sampling.

    Representation of data in a computer

    Data is always represented in a computer as a collection of binary bits. A bit represents a value of “0” or “1”. The bits are combined into bytes or words representing numeric values. A byte is normally understood as 8 bits. A word may have different lengths and the number of values that can be represented by a word is dependent on the number of bits in the word. The number of bits in the word is also known as word-length. The number of values is always the power of two of the word-length. See the table below for the number of values represented by often used word-lengths. more....

    Posted in coursera, Stuff, Tech | 1 Comment

    HOWTO: Recording an Acoustic Instrument

    Hi I am Arnold Greyling from Johannesburg in South Africa. This is my peer review assignment for week 1 of the Introduction To Music Production course at Coursera.org. I will be showing you how to record an acoustic instrument in a typical home studio. I will use the following equipment in this howto:
  • An acoustic guitar.
  • A Samson C2 condenser microphone.
  • Various cables.
  • A Steinberg UR22 USB audio interface.
  • A Macbook Pro Computer.
  • Garageband a Digital Audio Workstation (DAW) that Apple supplies free to Mac users.
  • This Howto will focus on setting up the equipment rather than the final recording and processing using the DAW. more....

    Posted in coursera, Stuff, Tech | Tagged , , , , , , | Leave a comment