Visualize the spread of viruses and bacteria

I found two very useful videos to visualize the spread of viruses and bacteria.

The first one, produced by Bauhaus-Universit├Ąt Weimar, shows the airflow that is moved when coughing, and what is the difference between coughing in the hand, elbow, or in a mask, normal or surgical. There’s a big difference!

The other is from Mark Rober, again, a Youtuber who, if you read my other posts, I suggested many times. In the video he scatters a dust, visible only with an ultraviolet lamp, on the hands of three children, during a lesson at a primary school. At the end of the lesson he shows the spread of “bacteria” (actually only this harmless powder), and how it spreads with handshakes!

After Windows Update, do you get error 0xc0000005?

Today I did Windows Update on my PC. I immediately saw that there was something wrong: it kept rebooting saying “error applying the update, aborting…” (or something like that)

After 30 minutes, it still was doing that loop, so I rebooted it.

BOOM! At startup I got a lot of errorsi 0xc0000005! Dropbox, Evernote, the Antivirus, even the Task Manager, would just give this 0xc0000005 error and just close!!!

In the beginning I blamed myself, I thought I was infected by some virus.

I was in panic, then I discovered that there is a “botched” update that renders your PC useless!

But, the fix is easy. Go to the start menu and write appwiz.cpl. You can open the uninstall programs panel. Select “show installed updates”. Search for that bastard, his name is KB2859537.

Right click on it, and then UNINSTALL. Restart your computer: now it should work! If it doesn’t, try removing the latest six updates.

The operating systems affected by this problem are Windows Vista, Windows 7 and Windows Server 2008 R2

Which is the lightest Antivirus?

Update 2017:

The lightest antivirus is Windows Defender, preinstalled in every Windows version after 8, like Windows 8.1, Windows 10, and so on…

If you have a new PC, with Windows 10, you don’t have to install another antivirus, it’s already integrated and it’s good


Which Antivirus uses less memory?

Raymond.cc tried TWENTYFIVE of them, and saw which uses less memory: Avast!

Watching the ranking, you can see that, unbelievably, Norton, known to being very heavy (the latest I tried it’s version 2003), has got much better, arriving in fourth position, even scoring better than NOD32, known to being very light.

Moreover it looks like Norton now sells for just 12$?? Wasn’t it around $50 / year??