tawkon droidcon nl - nov-2011
DESCRIPTION
mobile phone radiation - tawkon presentation @droidconNL Amsterdam Nov 2011TRANSCRIPT
tawkon proprietary and confidential Amit Lubovsky, Co-Founder tawkon [email protected] @amitlubovsky
“Mobile Phone Radiation”
tawkon proprietary and confidential
Mobile Phone Radiation
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Mobile Phones – Basic Facts Electromagnetic Radiation
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Typical Transmission Power Values
dBm level Power Notes
60 dBm 1 kW = 1000 W Typical RF power of microwave oven elements 33 dBm 2 W Maximum output from a UMTS/3G mobile phone
Maximum output from a GSM850/900 mobile phone
30 dBm 1 W = 1000 mW Maximum output from a GSM1800/1900 mobile phone
15 dBm 32 mW Typical WiFi transmission power in laptops. 0 dBm 1.0 mW Bluetooth standard radio, 1 m range −10 dBm 100 µW Typical maximum received signal power (−10 to −30 dBm) of
wireless network
Typical Transmission Power Values
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Exposure measurements
• Electromagnetic radiation (W) that is absorbed by
the human body (kg) • 1.6 W/kg (ICNIRP, adopted 1996) • Determined using a human head "phantom” • SAR is a "worst-case" scenario • Lower SAR = less exposure
SAR
Specific Absorption Rate
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Cellular: 1.19
Cellular: 1.39
Cellular: 0.58
0.52
0.12
0.08
1.19 1.39
0.58
SAR Diversity
Wi-Fi: 0.52
Wi-Fi: 0.12
Wi-Fi: 0.08
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Interphone (WHO)
• Published June 2010 - 13 countries, 10 years
• Mobile phone usage of >30 minutes a day for 10 years (“heavy users”) have a greater risk of developing brain cancer (40% - 200%)
Research
Cosmos
• World Health Organization (WHO) and the UK Health Protection Agency (HPA)
• Started 2010, will follow ~300,000 adult cell phone users in Europe for 20 to 30 years
Mobi-Kids
• International multi-center study involving 14 European and non-European countries • Exposure to cell phone radiation (and other RF sources) and brain cancer in young people
• Started 2010, ages 10 to 24 years
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WHO Announcement – May 31st 2011
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Exposure Measurement
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Source: EWG (Environmental Working Group)
Exposure measurements Precautionary Measures
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Drive Safely Eat Wisely Talk Responsibly
tawkon is a unique approach to handling public concerns
of mobile radiation
reduce exposure… without reducing usage
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Over 90% of the time, radiation exposure is low
“the concept”
Less than 10% of the time, radiation exposure is high
1 min in “red” equals 5 hours in “green”
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How does it work…?
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How it all started
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Let People See Radiation
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Apple…
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Pre Call
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Take Action
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Avoid Cumulative Exposure
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Help Others
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Now keep talking...