Imported PDF disappearing?

[Quoth]

Originally Posted by kapqa

@QUOTH, there are lots of intelligent people that have researched these topics, but they are seldom heard in the public arena.

Sadly many are misguided and heard too much in the public arena.

[DNSB]

Originally Posted by kapqa

the problem lies with low levels of radiation that are being emitted 24/h; therefore, it is good to have some "control" atleast on the devices that one can handle in his vicinity.

the truth will come out about the dangers of manmade microwave radiation, but better soonerthan too late. it is worst plague we are facing, at least nothing else comes to my mind that is similar in magnitude and impact.

Sorry but non-ionizing radiation is not really cumulative according to all the peer-reviewed studies I've looked at.

As for the radiation emission from electronics gear? I remember playing music to an AM radio by running "programs" on an S-100 bus computer. See MITS Altair AM Radio Music Jukebox and Dr. Dobbs Journal of Computer Calesthenics and Othodontia or Running Light Without Overbyte. When you start playing with ≥GHz CPU clocks, the noise moves into that range.

And when you are sitting the antenna on the ereader's body, try to remember the inverse-square law.

Anyone else remember the birth defects/cancers/etc. blamed on low frequency magnetic fields from high tension power lines in the early 90s? There was a mass of studies and the worst results were there was a weak correlation between central nervous system tumours and high tension power lines. Results that could not be duplicated with any degree of reliability. In one case, the birth defects that had been blamed on the power lines ran into the issue that the power lines ran through multiple communities and only one community reported an increase in birth defects suggesting that a localized environmental issue was far more likely to be the cause.

[Quoth]

The last analysis showed it was random. Random doesn't mean evenly spread. Random things cluster, see "Random walk".
https://en.wikipedia.org/wiki/Random_walk
Probability and Statistics are not intuitive.

Get a tub of 100s of 1000s candy cake decoration. A table cloth or sheet* on a large table, floor, patio or lawn. Sprinkle with eyes closed while shaking and waving.
You will not have an even spread. It will be a random spread with sparse areas and clusters. Evenly distributed is never random!

In one case, the birth defects that had been blamed on the power lines ran into the issue that the power lines ran through multiple communities and only one community reported an increase in birth defects suggesting that a localized environmental issue was far more likely to be the cause.

Or even within the realms of chance. I knew a small family where three members died of MS. No genetic or other known reason. Random events do cluster.

[* Interesting if a large map with loads of cities]

[Quoth]

There are real threats, such as: bad drivers, vaping (affects lungs of people close by), coal fired power stations, poorly tested software, hate & bullying posts on Social Media, sun bathing without sunblock, poorly regulated guns, lack of affordable health care.

The issue in schools isn't WiFi or Mobile signals. It's distraction of mobile phones.

There is a section here for rants: https://www.mobileread.com/forums/sh...ewpost&t=23762

Edit
An experiment regarding cumulative and absolute power.

You can hold a lit 1W incandescent (filament) bulb as long as you like. A 100W halogen or simple filament bulb can't be held. A 500W halogen tube lamp will burn you if you try to touch it.

A WiFi gadget is typically 0.25W and if reading the screen, the effective power on your face is about 0.000625W because it's about 20cm away and the signal spreads out (inverse square law).

A microwave oven is about 800W average. So no matter if it used light, IR , shortwave radio or microwave, that power will heat what is inside it. But it uses a magnetron, so actually does short pulses of about 10,000 W that average to 800W. The power setting simply cycles it on and off over a longer period. So the oven has a metal grill on the window to keep the radio pulses in.

A 1W lamp bulb is totally harmless and at a few inches (4cm) away zero cumulative effect. A 300W lamp bulb 4″ (10cm) from your face will burn it.
Up close to a 500W carbon arc lamp, close enough to feel the heat, will at least give you sunburn. Prolonged exposure might give cataracts, or blindness or skin cancer, like staring at the sun at noon in the summer, because the power is over the threshold for damage even in the short term.

I've seen high power RF (200W) light up an unconnected fluorescent tube. That's possibly an unsafe amount of RF.

[kapqa]

one good read on the to-do-list,
according to amazon

"Shows the ways in which the entire population of the United States is being exposed to dangerous levels of microwave radiation and points to a conspiracy of silence between the Department of Defense and the electronics industry"

https://www.amazon.com/Zapping-Ameri.../dp/0393064271

[kapqa]

deleted

[DNSB]

Just the cover of that book screams conspiracy theory.

Heck, do a search on flat earth on Amazon and count the number of titles that PROVE the earth is flat.

[issybird]

Let's rein in the discussion of conspiracy theories. Enough has been said; points have been made; no minds will be changed. Time to move on.