Monthly Archives: January 2016

The Pentagram of Venus

Azimuth

This image, made by Greg Egan, shows the orbit of Venus.

Look down on the plane of the Solar System from above the Earth. Track the Earth so it always appears directly below you, but don’t turn along with it. With the passage of each year, you will see the Sun go around the Earth. As the Sun goes around the Earth 8 times, Venus goes around the Sun 13 times, and traces out the pretty curve shown here.

It’s called the pentagram of Venus, because it has 5 ‘lobes’ where Venus makes its closest approach to Earth. At each closest approach, Venus move backwards compared to its usual motion across the sky: this is called retrograde motion.

Actually, what I just said is only approximately true. The Earth orbits the Sun once every

365.256

days. Venus orbits the Sun once every

224.701

days. So, Venus orbits…

View original post 763 more words

Advertisements

adb install over WiFi!

Quick tip for installing android apk files – On Developer options, enable adb debugging over network. You wouldn’t need to be rooted.

Screenshot_20160110-130303

Use the following simple commands for adb install over WiFi or through an USB connection. WiFi just needs to be on the same network and doesn’t have to be over a Hot Spot between your phone and system.

sudo adb devices

sudo adb connect 192.168.1.107

sudo adb install -r <path to the apk on your PC>

Using -r in the install command will over write any previous installation of the same apk.

Cheers!