Jan 19

Lots of people have commented on the possible increase in EMF exposure from Apple AirPods, but how bad are they? I’ve done some measurements with a field strength meter.  Here is a graph to give you an idea.

When you use the new Apple Airpods on a mobile phone call a you are getting approximately 10 times the EMF than if you were just holding the iPhone up to your ear and talking.   We already see these levels on wifi devices.  The difference is that the Apple AirPods are in your ear, not on the table, and they remain there for long periods of time. They are constantly transmitting at this level – they never turn off.

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Apr 10

ram

When your computer is running a bit slowly, how can you tell if getting more memory will help?

If you run out of free memory then your computer will be forced to use some of your hard disk as memory, which is VERY SLOW because hard drives are much slower to access than your computer’s RAM.  It’s not just a matter of saying ‘8 GB’ is enough because the amount of RAM you need will vary according to your Mac model and the programs you use.  Here’s how to check if you have enough RAM.

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Mar 03

seagate 2

 

Seagate make two external USB drives.  The Seagate Backup Plus and the Seagate Expansion.  They are both USB 3 compatible.  They both come with a three-year warranty in Australia, although in the USA the expansion only has a 1 year warranty.  The Backup Plus model costs $20 more.  A lot of reviewers say that the backup plus is more reliable (e.g. this one). But is there any difference?   I pulled them apart to see!

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Jan 28

LED

The Apple  24 inch LED Cinema display  and the Apple thunderbolt display have been a  source of frustration for many people.   They flickers, go black, the screens gets garbage on them, the fans turn on and off.   After reading lots of forums and trying various things I have practically completely eliminated all the flickering on my  24 inch LED Cinema display,  here is how. Continue reading ⟩

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Dec 29

Displays

One of the features I use regularly in the display settings of OS X is the adjustment of the gamma setting of my monitor.  This is useful because it can lighten up dark movies when you are watching them on your Mac.  The gamma setting is only available in the “expert” mode of display settings which has disappeared in El Capitan.  Thankfully  expert mode is still there, it’s just hidden.  To get into expert mode on El Capitan hold down the option key when you select ‘Calibrate…’  in display settings. Continue reading ⟩

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Dec 23

pegasus

Last week I had a hard disk crash.  If you’ve had a hard disk crash you may know it can take a day or two to get things up and running again, a day or two that I didn’t have.  I was flat our trying to get away on holidays before Christmas. Thankfully, I have a Promise Pegasus RAID array, and I can’t believe how great it was. I was up and running again in 30 seconds – I kid you not!  This article describes how it works for those who might be interested.

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Mar 08

util

You may not know that USB Thumbdrives come in different formats. This article explains why this matters and how to format a USB drive into the format that you want.

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Nov 06

TRIM

Some SSD drives are crashing in Yosemite do to an issue with something called ‘TRIM’.  Thankfully if you followed the method in my article entitled “How to speed up your mac with a Solid State SSD Drive” you will not have this problem. But if you have used an SSD that needs TRIM, read on to find out about the problem and how to fix it.

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