Sentence examples for proven unstable from inspiring English sources

So far the electrodes have proven unstable.

These membranes are stable in air-treatment at 450 °C, but have, so far, also proven unstable to high-temperature steam.

But even these muted successes proved unstable.

Some analysts say the coalition of former ideological rivals could prove unstable and short-lived.

We have built cities and economies on assumptions about the seasons that may prove unstable.

In part, his image has proved unstable simply because the historical record is so weak.

The broad political support for Mr Duhalde is deceptive, and may prove unstable.

But the soil proved unstable, and the crew decided to dig 20 inches deeper.

Both regimes rest on highly personalised rule that looks secure but may yet prove unstable.

The yellow proved unstable and within a few years had darkened and dimmed the picture's original colors.

If this proves unstable, Mr Gauck would become the first post-war president to call a new election.