pros and cons of lightning rods

� U��3��ԝ� KDS�E��L����U��g ⡲�;)Q�T��;x"8b�*7��;1Aa�؊�_���g�C�0~� �������C2�'9ݺ��+��u��KS�slf'�/p�~���7� J�����@>�b� I've seen a scale-model village successfully protected by tiny lightning rods from a "lightning" machine. Everyone learns about lightning rods in grade school. endobj 13 0 obj<>/XObject<>>>/CAPT_Info<>/Thumb 91 0 R>>

endobj H��V˒�6����L�Q���W��]�"�)/dPw���t;��� �]�L���>�9�H/aaZU�U�ُ�#L0&A�/���" "�pJx�/a�κ�b����c.��4�)�� ��rx��^#�9��V�|�߲?���B�1e�Y�*m��ؿ����^W�mMSG���:��~�L1�C�����U�X06�W��3��W촍�cF�#�����2ƭL�J�J��P���� What are the pros and cons of the lightning rod? After 1950 research largely ceased; people just assumed traditional lightning rods worked.

Q�q8K��}R�* �3$wW�>F��!�c #�Y���������j�?l� DL��NY�mo�i�P,�r���IcZ,��m�'��S�h���f����}����桍��֝��}��9��>�T}����&��:�]�H�B\�p(&>�s,*���v�.�@Jmc�j.. aH���rn��}Sd��`&2@�2��G���Wec�&+�s ��]�Y���������Ѐ�R�t�J_㢉_l}�j �"�!�a�*��e�ht �L!������kyUq����X:$ �eJ����(���ǟُڮz��\�I�D�cs�sj`

6 0 obj<>/XObject<>>>/CAPT_Info<>/Thumb 54 0 R>> Bl�d(4# An ESE terminal, described as looking like “a chrome cantaloupe with a chrome Frisbee around it and a little sharp prong on top and mysterious portholes around the sides,” uses radioactive material to send a stream of ions aloft. What problems can arise in using nondisclosure and noncompete agreements to protect intellectual property. (Another beef: the committee in charge of 780 includes too many lightning rod manufacturers, who have a vested interest in maintaining the status quo. 16 0 obj<>stream endobj But the subject came up recently at a CAE roundtable, reminding me how popular — yet controversial — the practice continues to be. He suggested that a gunpowder build- ing be completely enclosed with metal, forming a Faraday’s Cage. ,���՞��j�ڦ�y"@}�o�h���Q.�*�� h�6��'4���.0J��$ I��2�s��ˇ��g��|>�?�S#������X���{�G�$K�Ws�6�Q��Zp5����x��2O�� (R�>��陠T��]7�jn�F��� � �LƱ�>p56��户a�`E�B��Յ�;��Ԩ���o��6ei������lSovRzW+�u���R0 ����s�ݢGxv�������c�&kK�l�wE�`OiYtE�W|׬`���q\� �!��*U��:O������f���)3GD`������k���A#� YBSi�+h�����A����Z�� I�f�Mn8bF7��rSL'T/zkJ���@�&��_�g�dm{e�$�[��j��1� N�����庙iua)Z�ⴸ��LUXb�����w���˞�q\U$R���"#7��m�Hxt�Mu09Y��]Fp��~f'���� l�����Z���'@��{weJgz�z)��T�=�s��Jٟ���*��_�8��R����Ъݓ��yZR�+��u��b��OªT�>���˹���F[�,V;[a12�����]w���;M��.��l��]E�����Ǩ)�� ��"���3�~1s��۔��b������ƪ���~��_��}.s 15 0 obj<>stream

(Not The Astronaut), San Francisco endobj endobj There’s no scientific basis for NFPA 780 (traditional lightning rods) either.NFPA membership voted to approve an updated 780 anyway, but the NFPA standards council overruled them and announced its intention to rescind 780 unless somebody could give them good reason not to. Do houses with lightning rods actually get hit less often than houses without?

x�+� � | After 1950 research largely ceased; people just assumed traditional lightning rods worked.They probably do work, but maybe not as well as was once believed. But guess what, it said. endstream 2 0 obj<> As our Earth is neutral, it can take any amount of charge and thus these lightning rods can prevent our electrical appliances from shock.

endobj H�tV���8���B-0"����ҍ�h$��E�`���ԋ�4��twuUu7/8��Ʌ R�2�/��ꮫ�ۨ�WF8FfS�D��0�}B��˒!/0���љ?�ܟ1&�NF b��IxX��ݻV�z�/W%�'剔�$�%O������Ov���ۄ0#�!�zk��ʌ�j�Z�RN��EYxh���u�

John Glenn, N.T.A. Having been well schooled in skepticism by our beloved Cecil, I tried to find a scientific study showing that rods actually ward off lightning, before plunking down dollars. 18 0 obj<>stream ��|FH�n�*(��s]��&ޗ�����6W���)33�*�gh��Y8��/���d��6�QCQ@A��[���*.�ɳ���������8���� �F ���r�N>H������,���!.`�`���59;����s���c�"87���M�w ����P���䜦��ٺ��u����|���'k�^q�0X0!T�xͬ��pi�4���]�d$=�}\�"����%�L�L4S��a���x�࢙¯�����›0�آ�@ �獭���X������VԽ�h�w&�S��V���,��^P|�֐qft�A��bV �x���22ņ�����@�n!�l�p�R��Hm���1`:����,��9��U��N� ��03g�O�:9ֵM�K>�ź�A#���H!�����ۄ���^F�W�Su7��Ǿ������#[�����k(t+�B8R�9 2�����*NcX� ��5<0ϜS��h�΀���H���w�vJ�Q��>�M�����ڟ?�9�+M'�gg�� ��^ A lightning bolt strikes a Franklin rod and is carried harmlessly to earth by the grounding apparatus, sparing lives and property.