If anyone's interested here is a link to "Live Toyko Gieger Counter" (Radiation levels)

[Ian David]

If anyone's interested here is a link to "Live Toyko Gieger Counter" (Radiation levels) > http://www.ustream.tv/channel/geiger-counter-tokyo
http://twitter.com/C0d3Fr0sty/status/47133855982948352


Gaigakaunta are running a copy of Koto Ward, Tokyo Indoors (CPM show.) No audio. Gaigakaunta do-it-yourself kit to use is below.
http://strawberry-linux.com/catalog/items?code=53001

Equipment and the creation of an amateur, of course, the equipment is not so professional, I think you'll see us as reference only.

It is usually about 10 ~ 20CPM generally.
Time indicates the time from the bottom to start the counter. Because it works with PC power, PC is reset or when you reboot. Not long after starting between the extreme values ​​may appear.

PC environment because it is a general power outage, a malfunction may be cut or freeze line. But may take longer to recover in the late night the day, please understand.



See also:


How to Read a Geiger Counter

A Geiger counter detects ionizing radiation such as beta and gamma particles, and some models also detect alpha particles. The primary component of the Geiger counter is a tube filled with a gas that conducts electricity when struck by radiation. This allows the gas to complete an electrical circuit. This typically includes moving a needle and making an audible sound. Geiger counters can measure radiation in a variety of units, depending on the application.

More:
http://www.ehow.com/how_5329248_read-geiger-counter.html

[tekisui]

1. I'm interested, but don't know what I'm looking at.

[Skip_In_Boulder]

2. Translate the page and the text below is helpful

Gaigakaunta is running a copy of Koto Ward, Tokyo Indoors (CPM show.) No audio. Gaigakaunta do-it-yourself kit to use is below.
http://strawberry-linux.com/catalog/items?code=53001
Equipment and the creation of an amateur, of course, the equipment is not so professional, I think you'll see us as reference only.
It is usually about 10 ~ 20CPM generally.
Time indicates the time from the bottom to start the counter. PC power supply works with ... ( show more )

[tekisui]

4. Thanks!

[Poll_Blind]

3. CPM = Counts Per Minute. If you look at the following page and scroll down...

...to the part titled "High Altitude Radiation from Airplane Flights" here it'll indicate that a reviewer with a portable radiation detector also read about 12 cpm at ground level which we can safely assume is something like a baseline to see if it goes up with time.

PB

[GReedDiamond]

5. "It is usually about 10 ~ 20CPM generally."

So if it is reading at 12.35cpm, as it appears to be now, it is well within normal range?

I hope so, my girlfriend is stuck in Tokyo right now.

[Sirveri]

7. that sounds normal, using CPM it's difficult to count below 10CPM

The ones I used typically counted in roentgens per hour. Another issue is if this detector can detect alpha's, which is less of an issue during this scenario, but you can sometimes get abnormally high readings from a temperature inversion.

[GReedDiamond]

8. Thank You Sirveri...nt

[applegrove]

6. I passed it onto my brother who is in Kyoto. Thanks very much for posting it.