However with the introduction of lighter weight and more flexible plastic substrate magnetic tapes, combined with a vacuum column to control the tension that the magnetic tape experiences during use, the IBM 726 was a prototype of the modern digital tape recording system.

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There is, of course, a natural tension between the need to control IT spending and maintaining a strong competitive position in light of new technologies.

WSJ: The Experts: What Is the No. 1 Technology Issue Facing Companies Today?

It illustrates America's schizophrenia on the issue and the built-in tension between the need to control our borders and the profits we reap from keeping it open, between the wall and wallet.

CNN: Commentary: Immigration debate between wall and wallet

This combination of teaching, tailoring, and taking control draws on constructive tension throughout the sales process.

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"That tension between authorship and lack of control is what's so exciting, " Ms. Kopp claimed.

WSJ: Storytelling's 'Now'

The same tension between European integration and national control also poses problems for bank supervision.

ECONOMIST: European Central Bank

Arms control advocates on both sides worry that tension over the treaty could jeopardize cooperation on Iran and Afghanistan.

WSJ: Republican Sees No Russia Arms-Treaty Approval This Year

So far, senior Pakistani and Indian officials have kept tension from the recent events from spiraling out of control.

NPR: Pakistani Soldier Dies In Latest Attack In Kashmir

Surface tension in the water can sling the craft out of control or cause it to bounce violently.

FORBES: A Wing and a Prayer

ECB, because there is a tension within Europe between the desire for more integration and a reluctance to cede national political control.

ECONOMIST: European Central Bank