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Does snow or leaves obstruct a RFID reader?

Updated: 11/5/2022
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Readingtrain

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12y ago

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Yes, but the impact depends on the frequency and type of antenna. It's mainly the effect of free water absorbing the RF energy.

Low frequency near field systems have very little problem with water, while higher frequency far field systems can be completely stopped by wet leaves or free water.

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Q: Does snow or leaves obstruct a RFID reader?
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Continue Learning about Natural Sciences

Why are needle like leaves a good adaptation in cold weather?

Pines are one of the most resilient plants known, they can survive the freezing cold of Siberia and at the same time grow in warm and tropical areas. They are classified as gymnosperms. All gymnosperms have leaves that are needle-like and reproduce through the use of cones. I'm sure that everyone has wondered why a gymnosperm can keep it's green foliage, even when it is covered in snow and other plants have lost their leaves. The simple answer is that it has leaves like that because it has to survive in cold areas of the world. The narrow leaves are channeled as such because it does not want the snow to rest on it's leaves, so it has evolved to be as small as possible, so the snow can mostly just fall of the leaf. The leaves actually have a special coating on their leaves comprising of special enzymes, so that it does not get affected by the snow in direct contact with the leaves for half the year.


Why do small plants have big leaves?

because if they had a few giant leaves they would die too quickly.The reason they would is because in the fall the leaves wilt and drop off the tree, and the only thing that can feed the tree is it's leaves. And since there would be only a few leaves, the tree would die too quickly before it can grow more.That's why they have many small leaves instead.


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When do the first flowers and leaves come out in Boston?

The first flowers of the season usually come out early April in Boston, while the leaves hold off another month. About late April early May is when you would start seeing the first leaves open on the trees.


Why do leaves have different patterns?

The leaves have different shapes depending on the physiological necessity of the tree according to the region on the earth. For example the leaves of a tree in tropics have broad shape whereas the leaves of tree in a temperate region have conical shape so that the snow does not accumulate on the leaf. Dr.Rajendra Kumar pipparak@yahoo.co.in

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