Axiom Home Page Forums General Discussion Advice from Axiom Owners Speaker Magnet Fields and ICD's

If it's the same Inverse Square Law as applies to lighting (could there be two?) the effect would be one quarter the magnetism at twice the distance, or, put another way, if you double the distance you get 1/4 the effect.

This is because the light (or magnetism, or...or...) is not only spread horizontally, but vertically as well.

Since everybody here likes photos and I had 20 mins. between appointments, I drew a diagram!

Mark, your diagrams kick ass!

...but the perfectionist in me just can't help commenting that your squares should have some spherical curvature, since the linear distance from the bulb to each point in the squares at 2D should be equal....

I SAID I only had 20 minutes!

Besides, I'm a Photoshop guy... I ain't got no Illustrator or any of 'dem fanzee-schmantzee drawin' programs!

Man... see if I EVER post any photos on these boards!

Ajax, Mark S.,

Thanks for the super diagram. And yes, I did those same experiments with magnets as a kid and came to the same intuitive conclusion as you did.

Regards,

See Peter?
Alan liked my diagram....so there!

Mark
I liked your diagram also. It reminded me of a photography text book I had 20 years ago.

I used to teach photography classes and used to have all this stuff on slides. I actually showed slides...HA! Remember THOSE days?

Yea!!!
I have a 2 closets full of them. Wish I had a GOOD slide scanner.
IF I went and spent 1500.00 on one, it would take months to scan all my slides, then It wouldnt ever get used again, and I would have a $1500.00 paper weight.

Exactly. Boxes full of them. And I still have some large-format 2 1/4 x 2 1/4 inch transparencies. I have a viewer for those but the projector is long gone. When those big suckers were projected it was like HD compared to 35mm slides. I took them with a Yashica, a very good knock-off of the German-made (and expensive) Rolleiflex.

Regards,

My first medium format camera was a Yashicamat 124G TLR... I couldn't afford a medium format SLR or even a Mamiya at the time (I was 15)....not to mention a Rollei. It was a great camera...I still have it down in my studio in a display of old equipment.

I never had a way of projecting 2 1/4" transparencies though.... those and my 4x5s just got to look nice on a lightbox!