Cipher Challenge
Measuring an Invisible Wind
A scientific explanation of instruments and indirect observations used to measure air movement.
Ciphertext
UYBT XHBBDA JO QOOB TYZOXAVE, QD YBQAZWPOBAQ POHQWZO YAQ OKKOXAQ. H XWI HBOPDPOAOZ ZDAHAOQ HQ PDGYBC HYZ IWQFOQ YAQ XWIQ, HBT AFO ZDAHAYDB ZHAO YQ XDBGOZAOT AD UYBT QIOOT. H UYBT GHBO HVYCBQ UYAF AFO KVDU AD YBTYXHAO TYZOXAYDB. QDBYX HBOPDPOAOZQ QOBT QDWBT IWVQOQ JOAUOOB QOBQDZQ; TYKKOZOBXOQ YB AZHGOV AYPO ZOGOHV FDU RWYXLVE HYZ PDGOQ HVDBC QOGOZHV HNOQ. UOHAFOZ JHVVDDBQ AZHXL UYBTQ FYCFOZ YB AFO HAPDQIFOZO, UFYVO ZHTHZ XHB YBKOZ PDAYDB KZDP IZOXYIYAHAYDB DZ QWQIOBTOT IHZAYXVOQ. OGOZE POHQWZOPOBA TOIOBTQ DB VDXHAYDB. JWYVTYBCQ, AZOOQ, AOZZHYB, HBT YBQAZWPOBA FOYCFA HVAOZ HYZKVDU, QD UOHAFOZ QAHAYDBQ KDVVDU IVHXOPOBA QAHBTHZTQ UFOB IDQQYJVO. H QYBCVO BWPJOZ QWPPHZYMOQ XDPIVON, AWZJWVOBA PDAYDB. ZOIOHAOT DJQOZGHAYDBQ HXZDQQ AYPO HBT QIHXO PHLO AFO YBGYQYJVO PDGOPOBA WQOKWV KDZ KDZOXHQAYBC, HGYHAYDB, OBCYBOOZYBC, HBT OBOZCE IVHBBYBC.