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Wednesday, October 24, 2012

Lightspeed is an OpenGL program that shows what an object would look like as it travels closer and closer to the speed of light

This Lightspeed App looks interesting. But, I can't try it out right now, since I don't have 3D Drivers installed on my Fedora 14 System. I'm planning on installing them soon. When I install Fedora 17...

Don

Light Speed! is an OpenGL-based program developed to illustrate the effects of special relativity on the appearance of moving objects. When an object accelerates to more than a few million meters per second, it begins to appear warped and discolored in strange and unusual ways, and as it approaches the speed of light (299,792,458 m/s) the effects become more and more bizarre. In addition, the manner in which the object is distorted varies drastically with the viewpoint from which it is observed.

These effects which come into play at relativistic velocities are:

  1. The Lorentz contraction - causes the object to appear shorter
  2. The Doppler red/blue shift - alters the hues of color observed
  3. The headlight effect - brightens or darkens the object
  4. Optical aberration - deforms the object in unusual ways

They are described in greater depth in the About page. Highlights of the simulator's capabilities are listed on the Features page.

See Light Speed! in action
(The screen shots are here!)

Requirements

To run Light Speed!, you will need:

  • A Unix/Linux workstation running the X Window System
  • A fast CPU (then again, what today doesn't require one? :-)
  • OpenGL or Mesa3D libraries

Light Speed! also requires the GTK+ toolkit library. (Binaries with this library compiled in statically will be made available in the future)



Go there...
http://lightspeed.sourceforge.net/

Lightspeed is an OpenGL program that shows what an object would look like as it travels closer and closer to the speed of light
Lightspeed on Your Desktop | Linux Journal
Lightspeed download linux - Google Search
Light Speed!

HackRF - Transmit and Receive - A single software radio platform can be used to implement virtually any wireless technology (Bluetooth, GSM, ZigBee, etc.)


Software Defined Radio's are very interesting to me. I have been watching their development for a while now and this Project looks to be a big step forward. I hope to learn more and be able to try this out for my self, soon...

Don 


Introducing HackRF

I'd like to take a moment to properly introduce the project that is consuming most of my time this year: HackRF, a software radio peripheral. Software radio or Software Defined Radio (SDR) is the application of Digital Signal Processing (DSP) to radio waveforms. It is analogous to the software-based digital audio techniques that became popular a couple of decades ago. Just like a sound card in a computer digitizes audio waveforms, a software radio peripheral digitizes radio waveforms. It's like a very fast sound card with the speaker and microphone replaced by an antenna. A single software radio platform can be used to implement virtually any wireless technology (Bluetooth, GSM, ZigBee, etc.).
Digital audio capabilities in general purpose computers enabled a revolution in the sound and music industries with advances such as hard disk recording and MP3 file sharing. Today's computers are fast enough to process radio waveforms in similar ways, and the radio communications industry is going through the same sorts of changes. One critical advance has yet to take place, and that is the availability of low cost tools enabling any computer user to take part in the revolution.
HackRF project goals:
  • transmit and receive
  • operating frequency: 100 MHz to 6 GHz
  • maximum sample rate: 20 Msps
  • resolution: 8 bits
  • interface: High Speed USB
  • power supply: USB bus power
  • portable
  • open source hardware and software
  • low cost
There have been some exciting developments in the world of low cost software radio hardware in recent months, but the HackRF project will go much further. A key advance will be the ability to transmit as well as receive radio signals, and HackRF will also enable operation at higher frequencies, including the popular 2.4 GHz band. Most importantly, HackRF is an open source project, so people will always be able to use and modify the hardware design and software in the future. We are being very careful to only use electronic components with published documentation (no NDAs!) and to avoid software libraries without open source licenses. This means more work for us, but we think that it will be worth it in the long run.
Read More...
http://ossmann.blogspot.com/2012/06/introducing-hackrf.html

HackRF - Transmit and Receive - A single software radio platform can be used to implement virtually any wireless technology (Bluetooth, GSM, ZigBee, etc.)

Firmware Development Setup

Go there...
https://github.com/mossmann/hackrf/wiki/Firmware-Development-Setup


HackRF - Transmit and Receive - A single software radio platform can be used to implement virtually any wireless technology (Bluetooth, GSM, ZigBee, etc.)
mossmann's blog: Introducing HackRF
rtl-sdr – OsmoSDR
ShareBrained Technology | Electronics for Curious Brains
HackRF, A Software-Defined Radio Project | ShareBrained Technology
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mossmann/hackrf · GitHub
Home · mossmann/hackrf Wiki · GitHub
Building a better software defined radio (and transmitting as well) - Hack a Day
Firmware Development Setup · mossmann/hackrf Wiki · GitHub

Software Defined Radio
Scratch-built Software-Defined Radio - Hack a Day
Software defined radio from a USB TV capture card - Hack a Day
Improving a software defined radio with a few bits of wire - Hack a Day
[Balint] is starting a software-defined radio tutorial series - Hack a Day
Getting started with software defined radio - Hack a Day
Software-Defined Radio remotely using a Linux wall wart - Hack a Day
Software-Defined Radio remotely using a Linux wall wart - Hack a Day
Real time GPS decoding with software defined radio - Hack a Day
Building a better software defined radio (and transmitting as well) - Hack a Day
Fun with Software-Defined Radio - NBitWonder
NBitWonder • View topic - Software Defined Radio Experiment
HackRF, A Software-Defined Radio Project | ShareBrained Technology
First Test: Software Defined Radio - YouTube
Software Defined Radio Vlog Part 7 - AM Demodulation and Floating Point
Software Defined Radio Vlog Part 5 - Baseband Capture and Audio Out
Software Defined Radio Vlog Part 6 - VGA and 256 Point FFT
‪Software Defined Radio VLOG - Part 1‬‏ - YouTube
Software Defined Radio Vlog Part 4 - Frequency Scanning
‪Software Defined Radio Vlog - Part 2‬‏ - YouTube
‪Software Defined Radio VLOG Part 3 - Unintentional Resonate Circuit‬‏ - YouTube

Software Defined Radios and Antennas
Getting started with software defined radio - Hack a Day
Getting Started With RTL-SDR
GNU Radio - WikiStart - gnuradio.org
Getting Started With RTL-SDR
Ezcap EZTV668 DVB-T Digital TV USB 2.0 Dongle with FM/DAB/Remote Controller - Worldwide Free Shipping - DX
Budget TV Antenna : TV Antennas | RadioShack.com
Improving a software defined radio with a few bits of wire - Hack a Day
helix.air.net.au :: D.I.Y. Discone for RTLSDR
Discone antenna - Wikipedia, the free encyclopedia
Antenna, VE3SQB Ham radio antenna design software programs and sstv,qha, amateur radio,sstv,antennas,j-pole,quad,dipole,discone,antenna program, super scanner, pdl, omni, rhcp, bazooka, coaxial dipole,skyhopper)
Gqrx SDR receiver
Degen Designs

Radio Hack all links I have
Scratch-built Software-Defined Radio - Hack a Day
Scratch-built Software-Defined Radio - Hack a Day
Scratch-built Software-Defined Radio - Hack a Day
Matchbox launcher reacts to emergency band radio dispatcher - Hack a Day
8-bit computer project lands in a Philco radio case - Hack a Day
8-bit computer project lands in a Philco radio case - Hack a Day
Software defined radio from a USB TV capture card - Hack a Day
Software defined radio from a USB TV capture card - Hack a Day
One wire reads the keypad from the APRS radio mic - Hack a Day
Improving a software defined radio with a few bits of wire - Hack a Day
Improving a software defined radio with a few bits of wire - Hack a Day
Adding kilometers to a radio meant only for meters - Hack a Day
[Balint] is starting a software-defined radio tutorial series - Hack a Day
[Balint] is starting a software-defined radio tutorial series - Hack a Day
Ask Hackaday: Has anyone built a radio telescope? - Hack a Day
Getting started with software defined radio - Hack a Day
Getting started with software defined radio - Hack a Day
Getting started with software defined radio - Hack a Day
Software-Defined Radio remotely using a Linux wall wart - Hack a Day
Software-Defined Radio remotely using a Linux wall wart - Hack a Day
Software-Defined Radio remotely using a Linux wall wart - Hack a Day
Software-Defined Radio remotely using a Linux wall wart - Hack a Day
Decoding NOAA weather radio with an Arduino - Hack a Day
Real time GPS decoding with software defined radio - Hack a Day
Real time GPS decoding with software defined radio - Hack a Day
More small radio modules for your wireless needs - Hack a Day
More small radio modules for your wireless needs - Hack a Day
Portable radio station gets a beautiful case
Teensy board used as an AM radio transmitter - Hack a Day
Radio built from the London Underground map - Hack a Day
Building a better software defined radio (and transmitting as well)
Building a better software defined radio (and transmitting as well) - Hack a Day
Building a better software defined radio (and transmitting as well) - Hack a Day
Building a better software defined radio (and transmitting as well) - Hack a Day
EVE radio breakout board for the Raspberry Pi
Internet radio occupies an 80-year-old radio case
Internet radio occupies an 80-year-old radio case
Internet radio occupies an 80-year-old radio case
Minecraft clock radio puts a creeper head next to your bed
Turning a tiny router into a webradio
bladeRF, your next software defined radio
Hacking a radio controlled spy device for overly attached girlfriend.
Hacking a radio controlled spy device for overly attached girlfriend.
Stealing cars and ringing doorbells with radio
Writing new firmware for a handheld radio
Tube radio husk gets a web radio transplant
Console radio given new life with a WiFi router retrofit
Console radio given new life with a WiFi router retrofit
SDR as a Police and Fire radio scanner
Detecting galactic rotation with software defined radio
Raspi Internet radio with Google Music
Hacking the R-390A military shortwave radio receiver to transmit as well
Simple looking Antique Internet Radio has a lot under the hood
Simple looking Antique Internet Radio has a lot under the hood
MacGyver of the Day: Ham Radio Hacker Diana Eng
HackRF, A Software-Defined Radio Project | ShareBrained Technology
HackRF, A Software-Defined Radio Project | ShareBrained Technology
OS X port of gqrx is the easiest way to get into software defined radio
Open source software defined radio transceiver
Writing new firmware for a handheld radio
Still more software defined radio fun on the Mac
Detecting galactic rotation with software defined radio

Tuesday, October 23, 2012

FDA: 5 Death Reports for Monster Energy Drink

FDA: 5 Death Reports for Monster Energy Drink

Monster Energy Sued in Death of 14-Year-Old Girl
By
WebMD Health News
Reviewed by Louise Chang, MD

Oct. 23, 2012 -- The FDA is investigating reports of five deaths and a nonfatal heart attack in people who drank high-caffeine energy drinks made by the Monster Energy Company.

Meanwhile, a Maryland couple has filed a wrongful death suit against the company, alleging that their product killed their 14-year-old daughter. They say Anais Fournier, 14, collapsed after drinking her second 24-ounce Monster Energy drink in two days. She died six days later.

The reports are not proof that the drinks caused the deaths, but merely signal there might be a problem. Even if the deaths are determined to be caused by caffeine poisoning, the FDA will consider all sources of caffeine before blaming the deaths on the energy drink.

In addition to caffeine, energy drinks contain other stimulants, including taurine and guarana, a caffeine-containing plant.

Because energy drinks are sold as nutritional supplements, they are not regulated as foods. This means they may exceed the FDA-mandated limit of 71 milligrams of caffeine for a 12-ounce soda.

"FDA continues to evaluate the emerging science on a variety of ingredients, including caffeine," FDA spokeswoman Shelly Burgess said in an email.

The reports aren't the first health warnings about energy drinks. Last year, the U.S. Drug Abuse Warning Network reported a tenfold spike in emergency-room visits involving energy drinks. In some 70% of cases involving teens ages 12 to 17, the energy-drink itself -- not drugs or alcohol -- was the main reason for going to the ER.

Read More...
http://www.webmd.com/news/20121023/death-reports-monster-energy-drink?src=RSS_PUBLIC

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