Bulletproof Home Security System
Quite apart from its theoretical importance, the photoelectric effect has numerous practical applications. It makes it possible to convert a light signal into an electric current. Television cameras, burglar alarms, barcode readers and light sensors of every description are based on the photoelectric effect.
Any burglar you want to deter is not going into your premises straight at the bulb height (like a moth). He's not attracted that way to your glow but down at ground level, which is where the only illumination should be. The basic rule of good outdoor security lighting is that no one should ever see a bright bulb. It's so much more effective to go for a passive infrared system, which is then used to switch on a temporary searchlight even better still, why not use an infrared sensor for video and catch the burglar on video tape, as it were, literally, red-handed Law Enforcement Officers can take over with that tangible evidence.
My first computer for field use was IBM's Thinkpad X20. This is a super-slim computer measuring barely one inch thick with the screen closed and weighs less than four pounds. I purchased it just as the X20 was being replaced by the more powerful X21 so I got it very inexpensively. The computer itself cost about 750 online. Being so thin, it does not have any internal floppy or CD-ROM drives, so I added a docking station to it that provided ports for those items as well as a serial port. The computer has a Intel Celeron processor running at 550 Mhz, a 5.4 Gb hard drive and has 64MB RAM. It came with Windows 98 SE installed, which I later upgraded to Windows Me. The 12.1 inch screen provides only 800 x 600 maximum resolution, but that is more than plenty to support my needs. The only thing I needed to add after that was that DC adapter so I could run the computer from my car or portable power adapter. After losing the X-20 in a burglary, I replaced it with a Thinkpad R40 that runs...
Societies owning observatories have a lot of difficulty with security when their site is not on anyone's residential property, and particularly when it is isolated. In some cases a burglar alarm linked up to the police might be wise. Town dwellers might also wish to fit an alarm. Again, avoiding having windows is a good idea. Another point is to be careful, in your possible enthusiasm for advertising your astronomical achievements and acquisitions on the internet, not to provide information which will allow your exact location to be pinned-down by a criminal (and worse, allow him to work out on which date you will be out at a star-camp or party). It is really a matter of common sense.
If you use a site away from home, do reconnoitre it in daylight and, where appropriate, get the landowner's permission. Take personal security into account. You cannot enjoy observing if you are concerned about the potential presence of domesticated or wild animals or of antisocial people.
Where To Download Bulletproof Home
There is no free download for Bulletproof Home. You have to pay for it, just as you have to pay for a car, or for a pair of shoes, or to have your house painted.