Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Sister Mary Clare and Maria Domaradzka, Poland."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Sister Mary Clare is a quick-moving hard working little nun who still sees the world through bright eyes and addresses it with a stern voice when necessary."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Sister Mary Clare and Heang Lay, Cambodia."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Sister Mary Clare teaches English to Heang Lay, a native of Cambodia."

Iron dominated magnets are characterized in the limit of infinite permeability by a pole shape that is a magnetic equipotential. Deviations from this ideal because of finite permeability are associated with differences in path length, local saturation, flux concentration in slotted pole if crenellation is used, and sub surface voids. For moderate field levels the variation in flux path length throughout the iron lowers the magnetic potential on the iron surface more for the longer paths. As the excitation increases the permeability is lowered in regions of high flux density. Crenellation in this region offers some degree of control over the permeability by concentrating the flux. To a lesser degree sub surface voids can be used to control the reluctance of a flux path. The net result suggests that the shape of the effective air gap can be adjusted to be a magnetic equipotential sensibly equivalent to the ideal pole shape for infinite permeability.

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Tracy Lynn Green inspects his abandoned pigeon holes."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Talking about the Junior League provisional class for next year at a gathering in the home of Linda Kerran are Polly Nichols, Gene Gist, Betsy Thorpe and Dee Harris."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "The Rev Conn Davis surveys underground educational building of Woods Baptist Church."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "She is upset by the reception given her bill to restrict the purchase of impounded animals for experiments by research centers"

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Josh Kirkes gets a lesson from swimming instructor Nancy Myers."

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Weekly newspaper from Jacksboro, Texas that includes local, state, and national news along with extensive advertising.

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Rose Cordell, Yahia Algahtaji and Al-Suwaileh watch Mabel Mailand try computer at OCU."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Julie Brinker as Puss surprises Peter, played by Paul Boyer, during dress rehearsal for "Puss-in-Boots."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Helping out with the program are, from left, Barbara Thompson, Victoria Seikel and Jean Kelsey."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Princess and Chancellor are involved in intrigue with Puss diring dress rehearsal of "Puss-in-Boots."

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.