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- Newsgroups: misc.consumers.house
- Path: sparky!uunet!decwrl!pa.dec.com!engage.pko.dec.com!ramblr.enet.dec.com!moroney
- From: moroney@ramblr.enet.dec.com
- Subject: Re: Motion Detector Lighting Outside
- Message-ID: <1992Nov24.052902.18804@engage.pko.dec.com>
- Sender: newsdaemon@engage.pko.dec.com (USENET News Daemon)
- Organization: Digital Equipment Corporation
- Distribution: usa
- Date: Tue, 24 Nov 1992 05:25:16 GMT
- Lines: 10
-
- In article <1992Nov23.211114.4962@vlsi.ll.mit.edu>, ac@vlsi.ll.mit.edu (Andrew V. Curtis) writes...
- > Is it true that motion detector lighting decreases its
- >ability to sense movement the colder the temperature is?
-
- Actually just the opposite. At least for the infrared type (the most common
- type). The colder it is, the bigger the difference between a 98.6 F human and
- the ambient, so the bigger the temperature difference it sees when a person
- moves around in its range.
-
- -Mike
-