techy geeky iPhone trivia question

How many electromagnetic spectrum sensors does the iPhone 4 have?

I count six or seven; there's one I'm not sure about.

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On 06-18-2010 22:38, Michelle Steiner wrote:
> How many electromagnetic spectrum sensors does the iPhone 4 have?

Hmmm.

two cameras
___ GPS antennae
___ WiFi antennae
___ cellular system antennae
two light sensors for the "gyro" if it works by the
fiber optic method

If the are all “one,� that's seven. Unless they
share an antenna and you don’t count anything
downstream of the split.

Now, is it “electromagnetic� if it’s only
magnetic (compass) or only electro (numerous
inputs)?

What’s the one you’re not sure of?

--
Wes Groleau

Daily lessons & activities & their assessment
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In article <hvifcp$cp8$(E-Mail Removed)>,
Wes Groleau <Groleau+(E-Mail Removed)> wrote:

> What’s the one you’re not sure of?

My count is
2 cameras
GPS
WiFi
Cellular
Bluetooth

What I'm not sure of is the Nike+ receiver; I don't know whether it is a
separate sensor or Bluetooth. I know that it's not cellular or GPS, and I
doubt that it is WiFi.

It didn't occur to me that the gyroscope could be an electromagnetic
spectrum sensor.

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On Sat, 19 Jun 2010, Wes Groleau wrote:

> On 06-18-2010 22:38, Michelle Steiner wrote:
>> How many electromagnetic spectrum sensors does the iPhone 4 have?
>
> Hmmm.
>
> two cameras

Being that these are _light_ based, I'd probably not recommend counting
them.

> ___ GPS antennae
> ___ WiFi antennae
> ___ cellular system antennae

So called "software defined" radio means that one package of hardware
electronics is "managed" all by software, including the capacity to carry
out N processes simultaneously.

> two light sensors for the "gyro" if it works by the
> fiber optic method

If the are inertia-based, then maybe not. Do you know how they work?
Surely not with spinning motors.

> If the are all “one,� that's seven. Unless they
> share an antenna and you don’t count anything
> downstream of the split.

You also need to consider the transmitter side, for more processes, also
possibly under "software defined radio" control.

> Now, is it “electromagnetic� if it’s only
> magnetic (compass)

Earth's nagnetic fields could be swamped by stray from electrical
machinery.

or only electro (numerous
> inputs)?

Electro-what?

> What’s the one you’re not sure of?

Don't forget, the iPhone (as well as cellphones) also generates RF
interference. I can pick it up on telephones, audio equipment, monitor
screens, TV sets, and a shortwave receiver tuned almost anywhere (from
time to time it generates what I think is a short burst of pulses probably
to confirm connections to cell towers, etc [my netbook also, at periodic
intervals, exchanges a small number of bytes of data with the network,
even if nothing is happening on the keyboard or no html-xml downloading is
taking place {it shows up as packets sent/received on the rate meter}]).

> --
> Wes Groleau
>
> Daily lessons & activities & their assessment
> http://Ideas.Lang-Learn.us/barrett?itemid=1413
>

In article <(E-Mail Removed) >,
"Me, ...again!" <(E-Mail Removed)> wrote:

> >> How many electromagnetic spectrum sensors does the iPhone 4 have?
> >
> > Hmmm.
> >
> > two cameras
>
> Being that these are _light_ based, I'd probably not recommend counting
> them.

Light is part of the electromagnetic spectrum. I worded the question
carefully so that the cameras would be included.

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In article <(E-Mail Removed) >, Me,
....again! <(E-Mail Removed)> wrote:

> >> How many electromagnetic spectrum sensors does the iPhone 4 have?
> >
> > Hmmm.
> > two cameras
>
> Being that these are _light_ based, I'd probably not recommend counting
> them.

light is electromagnetic radiation.

> > ___ GPS antennae
> > ___ WiFi antennae
> > ___ cellular system antennae
>
> So called "software defined" radio means that one package of hardware
> electronics is "managed" all by software, including the capacity to carry
> out N processes simultaneously.

except that they're separate and where in the world did you come up
with software defined radio?

> > two light sensors for the "gyro" if it works by the
> > fiber optic method
>
> If the are inertia-based, then maybe not. Do you know how they work?
> Surely not with spinning motors.

read another book.

> > If the are all ’Äúone,’Äù that's seven. Unless they
> > share an antenna and you don’Äôt count anything
> > downstream of the split.
>
> You also need to consider the transmitter side, for more processes, also
> possibly under "software defined radio" control.

a transmitter is not a 'sensor.'

> > Now, is it ’Äúelectromagnetic’Äù if it’Äôs only
> > magnetic (compass)
>
> Earth's nagnetic fields could be swamped by stray from electrical
> machinery.

absolutely. we wouldn't want to swamp the earth's magnetic fields with
too many devices. just think of the damage that could cause.

> or only electro (numerous
> > inputs)?
>
> Electro-what?

yes.

> > What’Äôs the one you’Äôre not sure of?
>
> Don't forget, the iPhone (as well as cellphones) also generates RF
> interference.

not all cellphones do.

> I can pick it up on telephones, audio equipment, monitor
> screens, TV sets, and a shortwave receiver tuned almost anywhere (from
> time to time it generates what I think is a short burst of pulses probably
> to confirm connections to cell towers, etc [my netbook also, at periodic
> intervals, exchanges a small number of bytes of data with the network,
> even if nothing is happening on the keyboard or no html-xml downloading is
> taking place {it shows up as packets sent/received on the rate meter}]).

not if you turn off networking it doesn't.

In article
<michelle-(E-Mail Removed)>,
Michelle Steiner <(E-Mail Removed)> wrote:

> What I'm not sure of is the Nike+ receiver; I don't know whether it is a
> separate sensor or Bluetooth. I know that it's not cellular or GPS, and I
> doubt that it is WiFi.

it's bluetooth.

>>> How many electromagnetic spectrum sensors does the iPhone 4 have?
>>
>> two cameras
>
> Being that these are _light_ based, I'd probably not recommend counting
> them.

No fair--she said it was a GEEKY question, and she specifically said
�electromagnetic spectrum�

>> ___ GPS antennae
>> ___ WiFi antennae
>> ___ cellular system antennae
>
>> two light sensors for the "gyro" if it works by the
>> fiber optic method
>
> If the are inertia-based, then maybe not. Do you know how they work?
> Surely not with spinning motors.

No and no. In a previous thread, I posted a link on the fiber optic
method, which may not be the only non-inertial method.

> You also need to consider the transmitter side, for more processes, also
> possibly under "software defined radio" control.

Michelle also specifically said “sensors�

>> Now, is it “electromagnetic� if it’s only
>> magnetic (compass)
>
> Earth's nagnetic fields could be swamped by stray from electrical
> machinery.

But that's not what the sensor was intended to sense.

> Don't forget, the iPhone (as well as cellphones) also generates RF
> interference. I can pick it up on telephones, audio equipment, monitor

Yes, when I'm on a landline at work, a little burst of buzzing tells
me my phone is going to ring within two seconds. Maybe I should
pretend to be psychic, …


--
Wes Groleau

"Missing a train is only painful if you run after it!"
-- Nassim Nicholas Taleb

In article <hvipfp$lo6$(E-Mail Removed)>, Wes Groleau
<Groleau+(E-Mail Removed)> wrote:

> Yes, when I'm on a landline at work, a little burst of buzzing tells
> me my phone is going to ring within two seconds. Maybe I should
> pretend to be psychic, Š

get a phone that uses cdma and that won't happen.

In article <190620101201536247%(E-Mail Removed)>,
nospam <(E-Mail Removed)> wrote:

> > Yes, when I'm on a landline at work, a little burst of buzzing tells
> > me my phone is going to ring within two seconds. Maybe I should
> > pretend to be psychic, Š
>
> get a phone that uses cdma and that won't happen.

A landline CDMA phone, what a concept!

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