A delegation from Egypt arrived in Israel on Friday hoping to revive the truce negotiations
mena2 hours ago
The intensity of the ultra violet rays can be assessed by comparing the body with the length of the shadow cast by the sun, Meffert added.
Ultra violet rays pose a small risk to skin type II, which is common in the Northern Hemisphere, when your shadow is approximately a third longer than your body.
If your shadow is shorter than your body-length, you must protect your skin with extra clothing, sun cream or by moving into the shade.
Meffert believes the advantage of this method of judging the risk posed by the sun is that the relationship between shadow-length and ultra violet intensity is independent of the season, the time of day and geographical location.
A delegation from Egypt arrived in Israel on Friday hoping to revive the truce negotiations
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