# Re: Can someone explain why this doesn't work?

```On 7/23/2013 2:49 PM, Jason Resch wrote:
```

```

```
On Tue, Jul 23, 2013 at 2:48 PM, meekerdb <meeke...@verizon.net <mailto:meeke...@verizon.net>> wrote:
```
On 7/23/2013 7:00 AM, Jason Resch wrote:
```
```    When there are two polarizers A and C, which are rotated by 90 degrees to
each
other then no photons will pass through both polarizers. However, if we
insert
polarizer B at a 45 degree offset to A and C then 1/4 of the photons will
make it
through.

Now let's say we have two entangled photons travelling away from each
other.  If we
send photon #1 through polarizer A right before photon #2 goes through
polarizer B,
```
```
How about a clarifying diagram.  In the first para B was between A and C,
now it
seems it's in the opposite direction of A relative to the source.

In the first case:

0 degrees                45 degrees            90 degrees
```
photon #1 ----> (Polarizer A) ------> (Polarizer B) ------> (Polarizer C)----> (Detector)
```

In the second case, two entagled photons are sent in opposite directions
(45 degrees)                             0 degrees      90 degrees
```
<-----(Polarizer B) <------- #2 #1 ----> (Polarizer A) ------------------> (Polarizer C)
```
Where B is spaced at a distance greater than A, but less than C.
```
```
OK, but what are the angles and how are the varied to send a signal?

Brent

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