We agree I need a new laptop due to this issue alone.  It’s not hot enough that 
it can’t be moved away quickly enough to prevent a permanent burn.  But it is 
hot enough to leave sun-burn like splotches on skin if left to long over a thin 
layer of clothing.  Hot enough to discolor some other materials it may rest on 
as well.

-Dave

From: Richard Nute [mailto:ri...@ieee.org]
Sent: Thursday, August 16, 2018 3:44 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] hot laptop


Its not the temperature, but the thermal energy that is transferred to a body 
part.  Consider aluminum foil versus cast aluminum at the same temperature, say 
140 F.  The foil won’t burn you, but the cast aluminum sure will!

The thermal resistance of plastic will give you the time to disconnect from the 
140 F surface of your laptop before you suffer a burn.

You need a new laptop, too!  😊

Best regards,
Rich



From: IBM Ken <ibm...@gmail.com>
Sent: Thursday, August 16, 2018 12:31 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] hot laptop

Aren't we supposed to call them "notebook" computers now, so it can be claimed 
they're not intended for use on a lap?

For what it's worth, I've measured up to 140F on the surface of my computer...

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