English
聯系我們
網站地圖
郵箱
舊版回顧



白鱀豚躲貓貓之神奇的隱身毯

文章來源:聲學研究所   發布時間:2019-05-10  【字號:     】  

  中科院聲學所的LOGO里有只白鱀豚。

  白鱀豚家族曾經生活在長江里,他們聲吶系統發達,玩起躲貓貓游戲來,誰在他們面前都是小透明。

  直到有一天,中科院聲學所的博士提供了一個神奇寶物,白鱀豚寶寶就成功躲起來了。這究竟是怎么回事呢?

[video:01-白鱀豚躲貓貓-2'20'']

  短視頻《白鱀豚躲貓貓之神奇的隱身毯》

  白鱀豚視力不好,就靠聲信號充當眼睛。除了用于通信聯絡的 “呼喚聲”(低頻),還有玩耍時悠閑自在的“哞叫聲”(中低頻)和回聲定位的“的答聲”(高頻)。

  第一輪“躲貓貓”,灰仔和小優裹緊了橡膠外套,等著白奇來找。

  白奇發出高頻“的答聲”,波束較窄,峰值頻率20~120kHz,但是一遇上橡膠就被吸收了,啥也沒反饋回來。

  白奇連忙換“呼喚聲”,這種聲波頻率低、波束寬,覆蓋范圍大,峰值頻率12kHz。“呼喚聲”信號經過灰仔和小優時很快就反射回來,白奇腦袋里形成了兩只白鱀豚的圖像。

  第二輪“躲貓貓”,白奇和灰仔披上博士用超材料做出的水下聲學隱身毯,等著小優來找。

  小優向四周發出“的答”聲。聲波繞過隱身毯繼續往前走了,沒有回波。小優又發出“呼喚聲”,還是沒有一點回音。

  小優只好認輸。

  原來,橡膠可以吸收高頻信號,對于低頻信號可是一點辦法都沒有。我們知道,在水下能夠遠距離傳播的就只有低頻聲波信號,所以中科院聲學所的博士專門研究了怎么騙過低頻信號的隱身毯。




(責任編輯:侯茜)

附件:

專題推薦

相關新聞


© 1996 - 中國科學院 版權所有 京ICP備05002857號  京公網安備110402500047號  聯系我們

地址:北京市三里河路52號 郵編:100864

彩宝www.cb5388.com 100051.com | www.073044.com | 663170.com | 056153.com | www.86464.com | www.231729.com | www.603769.com | 148550.com | www.500733.cc | www.2790.pw | www.69360.com | www.947760.com | www.361130.com | www.602545.com | www.we10.com | www.424.biz | www.656446.com | www.387532.com | www.339928.com | www.831250.com | 055054.com | www.856520.com | 快彩www.81678u.com | www.05017.com | www.5317.biz | www.60ud.com | www.603285.com | www.754186.com | www.55og.com | www.306181.com | www.233430.com | www.808477.com | www.681529.com | www.895598.com | www.27083.com | www.26159.cc | www.4340.xyz | 大玩家彩票www.451599.com | www.zm40.com | www.151070.com | www.698746.com | www.760086.com | www.1972.vip | www.133614.com | www.16978.com | 857298.com | www.85197.com | www.243.com | 奔驰彩票www.281877.com | www.10466.com | www.yz18.com | www.613766.com | www.cp9727.com | www.02469.com | www.358996.com | www.567891.cc | 4083.biz | 875052.com | www.209719.com | www.984965.com | www.272332.com | k58.com | www.fn55.com | 978800.com | www.856383.com | www.9363.com | www.1302.wang | 乐彩网www.lcw997.com | www.793787.com | www.99693.cc | www.qp50.com | www.31261.cc | www.895689.com | 532941.com | www.8499.wang | www.206407.com | www.591069.com | www.329287.com | www.648609.com | www.846496.com | 大赢家彩票www.598061.com | www.735999.com | www.2sa.com | www.201473.com | 6961.biz | www.965011.com | www.912173.com | 761603.com | 344454.com | www.66rz.com | www.496949.com | www.mx49.com | www.791475.com | www.88683.cc | www.447114.com | www.0870.bid | www.23812.cc | www.383218.com | www.271600.com | 788078.com | www.87288.cc | 139790.com | www.30ju.com | www.33640.com | www.681279.com | www.057876.com | www.180252.com | 325308.com | www.333661.com | www.979930.com | www.684755.com | www.84667.com | www.33887.com | www.63618.com | www.286146.com | www.az50.com | www.ab96.com | www.596512.com | www.192118.com | www.5622.com | www.959351.com | 365912.cc | www.13595.cc | www.861960.com | 972632.com | www.mf24.com | www.89ka.com | c58.cm | 408652.com | www.957100.com | 923153.com | www.cai849.com | www.793.red | www.028203.com | www.641199.com | www.22348.com | www.25122.com | www.969426.com | 333924.com | www.440896.com | 949586.com | 611154.com | 39彩票www.3933y.cc | 大赢家彩票平台www.781367.com | 梦想彩票站www.43131z.com | www.566960.com | 448811.com | www.cai8567.com | 网易彩票www.087wy.com | www.222385.com | www.ka23.com | www.19309.cc | www.970343.com | www.771069.com | www.95302.com | www.339220.com | www.7238.in | www.321136.com | 760161.com | 397400.com | www.sf50.com | www.5464.xyz | 164045.com | 040108.com | 324330.com | www.349256.com | www.cai3311.com | 500彩票网www.847577.com | 1508.cc | www.275390.com | www.660.pw | www.55512.com | www.749010.com | 024306.com | www.967904.com | 652810.com | 285556.com | www.240551.com | www.299032.com | www.941034.com | www.963045.com | www.951240.com | www.976117.com | www.905738.com | 036356.com | www.529665.com | www.679020.com | www.518836.com | www.842000.com | www.lh10.com | 大赢家彩票平台www.376513.com | www.332889.com | www.858981.com | www.567793.com | 415588.com | 330077.cc | www.245007.com | www.yj4.cc | www.365135.cc | www.783460.com | 693797.com | www.065252.com | www.989317.com | www.9023.net | www.9650.org | www.583839.com | www.373333.com | www.104073.com | www.137046.com | 588726.com | www.134712.com | www.89764.com | www.748.me | 好运彩吧www.097067.com | www.876276.com | www.538355.com | www.996496.com | 231604.com | www.35ob.com | www.189307.com | 217392.com | 599346.com | www.cp5466.com | www.zh90.com | www.329068.com | 849660.com | www.659201.com | www.692738.cc | www.654972.com | www.828415.com | www.672019.com | www.356023.com | www.456853.com | www.627585.com | 343153.com | www.3040.com | www.780275.com | www.15qz.com | 577010.com | www.094701.com | www.370297.com | www.933711.com | www.093911.com | www.6255.com | www.217752.com | www.086813.com | www.42921.com | 116789.com--116789.com | www.664237.com | 441155.com | 818575.com | www.37au.com | www.577581.com | 222389.com | www.wx02.cc | www.617.in | yh56.cc | www.663816.com | www.256778.com | www.617139.com | www.7983.pw | www.610573.com | www.wy39.com | 383291.com | 904567.com | www.986787.com | www.919882.com | www.066384.com | www.360748.com | www.94423.com | 943652.com | 手机购彩www.c602.cc | www.499798.com | www.994721.cc | 286000.com | 947882.com | www.44vs.com | www.75876.cc | www.c72.vip | www.ca06.com | www.d68.xyz | www.593565.com | www.552957.com | www.74384.com | www.pm10.com | 奔驰彩票www.29178f.com | www.3011.biz | www.5gn.com | www.306219.com | 乐盈彩票www.gy11.com | www.887329.com | www.685305.com | www.888266.com | www.996893.com | www.949017.com | www.654620.com | www.650829.com | h88m.com | www.48qv.com | 993055.com | www.804799.com | 950937.com | www.151293.com | www.22219.com | 568722.com | www.378313.com | www.700777.com | www.676722.com | 381644.com | www.297932.com | www.964383.com | www.044673.com | 812304.com | www.576741.com | 662188.com | 341344.com | 13e彩票www.820535.com | 47td.com | 316905.com | www.018759.com | www.432808.com | www.936458.com | www.254913.com | www.306051.com | www.203235.com | www.46842.com | www.757948.com | www.096031.com | www.755417.com | www.783653.com | 21846.com | www.3790.cc | www.679249.com | www.788698.com | www.551669.com | www.gs42.com | www.21758.cc | www.708577.com | www.930345.com | www.354525.com | www.452997.com | www.412984.com | 乐彩网www.3416t.com | 500彩票www.722571.com | www.6570.vip | www.29sg.com | 473273.com | 585300.com | www.85691.com | www.31qp.com | www.839087.com | www.499439.com | www.257933.com | 430989.com | 637267.com | www.78810.com | www.035242.com | www.169608.com | www.444164.com | www.151380.com | www.f92.club | 幸运彩票www.854766.com | 东方国际www.055979.com | www.130650.com | www.393831.com | www.445218.com | www.086568.com | www.208578.com | www.961631.com | www.848509.com | www.433254.com | www.365922.com | www.360066.com | 345258.com | www.199943.com | uj32.com | www.230287.com | 168490.com | www.43um.com | www.09xk.com | www.196345.com | www.172743.com | www.066333.com | www.038070.com | www.597317.com | www.36ey.com | www.1628.xyz | www.649788.com | www.732018.com | www.678457.com | 659460.com | www.51369.cc | www.914967.com | www.340395.com | 422514.com | www.346662.com | www.27113.cc | www.844098.com | www.007035.com | 052387.com | 077300.com | www.40ql.com | www.745605.com | www.42rb.com | www.389555.com | www.531416.com | www.083882.com | 565848.com | www.912458.com | www.03ek.com | www.127294.com | 9640.biz | www.953328.com | www.573233.com | www.980351.com | www.666633.com | www.33go.com | www.261594.com | 589656.com | 539034.com | 388786.com | www.938715.com | www.376263.com | www.6038.com | 257832.com | www.9904.pw | www.99003.cc | www.bg43.com | v66.hk | www.981263.com | www.06044.com | www.355348.com | www.830322.com | 500彩票www.927986.com | www.6040.website | www.154186.com | www.949710.com | www.881258.com | 979974.com | 995522.com | 027934.com | 757397.com | www.464268.com | www.669995.com | www.718378.com | www.695099.com | www.666669.cc | 624302.com | www.ap18.com | 964172.com | 826872.com | www.55273.com | 087029.com | 420921.com | www.217323.com | www.913499.com | www.975264.com | www.yc01.com | www.0890.com | www.222148.com | www.935228.com | 094557.com | 福利彩票www.78700a.com | 110371.com | 271175.com | 6939.com | www.bm37.cc | www.3501.cm | www.396461.com | www.kj26.cc | mq84.com | 370050.com | 365101.cc | www.42fh.com | www.2023.cm | www.422542.com | www.471917.com | www.607268.com | www.776654.com | 160173.com | 669467.com | www.145235.com | www.089448.com | www.cp163.com | www.22hv.com | www.i50.pw | www.875725.com | 573130.com | www.9256.online | www.62hn.com | www.667284.com | www.645.in | www.456720.com | www.760159.com | www.77ev.com | www.730693.com | www.485996.com | www.192777.com | www.094501.com | 535184.com | 605112.com | www.701667.com | www.271443.com | www.340200.com | www.332908.com | www.851323.com | www.88099.com | www.874056.com | www.160.bid | www.4569.wang | www.475333.com | 691955.com | www.61217.cc | www.128897.com | www.071297.com | 409166.com | 824364.com | www.744771.com | 226886.com | www.271385.com | www.254176.com | www.083146.com | www.u79.org | www.376131.com | 616717.com | www.294477.com | www.626837.com | 265035.com | www.920752.com | www.64746.com | www.57957.cc | www.250544.com | www.164907.com | www.vt87.com | www.30xi.com | www.10363.com | www.5913.me | www.279909.com | www.62511.com | www.dj84.com | www.22216.com | www.0334.loan | www.045996.com | www.98ff.com | www.004901.com | www.18852.com | www.865898.com | www.ly62.com | www.1152.wang | www.825749.com | www.92622.cc | www.766438.com | 网易彩票www.096wy.com | www.7011.pw | www.128014.com | www.200087.com | www.376028.com | www.386300.com | www.093025.com | www.842227.com | www.601997.cc | www.035552.com | www.248718.com | www.70086.com | www.204360.com | 010268.com | www.zp39.com | www.vm98.com | www.26xy.com | www.16na.com | www.356402.com | www.605229.com | www.46727.com | 617703.com | ia98.com | www.8567.win | www.78xt.com | 723756.com | www.539482.com | www.533336.com | www.t37.club | 彩82www.08992.com | www.7714.pw | www.82ew.com | www.365557.cc | www.139770.com | www.qr72.com | www.79qu.com | www.307720.com | www.256514.com | www.zk84.com | www.115041.com | www.964362.com | www.1763.net | www.8604.me | www.12zi.com | www.715283.com | www.948614.com | www.4425.cc | www.551448.com | www.kk97.com | www.wv76.com | www.60064.com | www.01251.com | www.588378.com | www.dz14.com | www.il31.com | www.7818.shop | www.27md.com | www.1726.vip | www.430566.com | www.072005.com | www.3761.com | www.54989.com | www.179813.com | www.131498.com | www.447989.com | www.113245.com | www.709352.com | www.60ax.com | www.34393.com | www.197736.com | www.459308.com | www.954091.com | www.810093.com | www.728512.com | www.669451.com | www.950953.com | www.923478.com | www.789421.com | www.662273.com | www.707687.com | www.622656.com | www.707575.com | www.632493.com | www.831960.com | www.897969.com | www.540108.com | 126341.com | www.44fd.com | www.hr10.com | www.3932.org | www.1987.org | www.7117.cm | www.94006.com | 909769.com | 121426.com | www.810052.com | 948232.com | www.335210.com | 537844.com | 18739.com | www.pd42.com | www.3167.win | www.76pb.com | www.1559.win | www.61fw.com | www.53td.com | www.c55.me | www.07aj.com | www.yv27.com | www.114164.com | www.261199.com | www.414013.com | www.116987.com | 835666.com | 632860.com | www.872719.com | www.87880.cc | www.379956.com | www.590132.com | www.888046.com | 500彩票www.927836.com | 037917.com | www.1852.vip | www.wu35.com | 525703.com | sy10.cc | www.806803.com | 321690.com | 947876.com | 584618.com | www.ya96.com | www.18857.cc | www.113349.com | www.062568.com | 371499.com | www.798132.com | www.188694.com | 云博彩票www.www.966829.com | 783896.com | www.66nsb.com | 365649.cc | 彩61www.092603.com | 279819.com | 593169.com | 761035.com | www.239216.com | www.505620.com | www.854408.com | 盛大彩票www.c5963.com | 243125.com | www.052907.com | www.007774.com | www.25896.cc | www.0734.mobi | www.35762.cc | www.49fd.com | www.9798.online | www.365344.cc | www.412374.com | www.586430.com | 522557.com | www.911729.com | www.578787.com | www.4399.tm | www.002425.com | 凤凰彩票www.55228b.com | www.064647.com | www.650977.com | fi64.com | www.644586.com | www.04yc.com | www.82832.cc | www.8844.online | www.nb57.com | www.62zk.com | www.mu39.com | www.jf16.com | www.021749.com | www.41700.com | www.80102.com | www.100036.com | 171498.com | 5274.biz | www.952266.com | www.38897.cc | www.2992.site | www.5290.net | www.5705.cn | www.294567.com | www.575308.com | www.0245.org | www.358766.com | www.568146.com | www.811662.com | www.728477.com | th43.com | www.xe57.com | www.96mh.com | 698718.cc | 868446.com | www.861246.com | www.60ok.com | www.280.cx | www.7260.loan | www.69523.com | www.334113.com | www.553533.com | www.44zy.com | www.226939.com | 132382.com | 898246.com | www.921565.com | www.754488.com | www.687328.com | www.583878.com | www.06ss.com | www.137115.com | www.yj46.com | 894809.com | www.921398.com | www.739148.com | www.345892.com | www.229266.com | www.874393.com | 643674.com | 682244.com | 310267.com | 818合彩www.www.9889hc.com | 8841.biz | www.930080.com | www.114610.com | www.281198.com | www.151.cm | www.58fn.com | 307144.com | 244508.com | www.dx23.com | www.471.date | www.218144.com | 980063.com | www.835738.com | www.10033.com | 天下彩www.849689.com | www.841617.com | www.923605.com | www.32js.com | 726613.com | www.92049.com | www.018685.com | 天天彩票www.54968g.com | 971829.com | www.802419.com | www.948459.com | www.779458.com | www.710803.com | www.981348.com | 彩天下www.196046.com | 917305.com | www.558036.com | www.41708.com | 天玺彩票www.283550.com | 751104.com | 524093.com | www.ic6.cc | www.cp3325.com | www.08592.cc | www.287845.com | www.181164.com | 025434.com | www.cp8556.com | www.287161.com | www.601848.com | www.492992.com | www.260826.com | www.3516.com | www.439999.com | www.219848.com | www.532814.com | www.301776.com | www.267167.com | www.986764.com | www.839126.com | 208027.com | www.0653.vip | www.904.site | www.589876.com | www.53249.com | www.197009.com | www.799363.com | www.577030.com | www.625183.com | www.882393.com | 881986.com | www.uv43.com | www.980712.com | www.514740.com | www.1637.top | www.136446.com | www.8598.cc | www.uc70.com | 935488.com | www.756632.com | www.3216.cool | www.903762.com | 大赢家彩票平台www.130511.com | www.38xo.com | 964712.com | 690271.com | 大赢家彩票www.5086q.com | if41.com | 730027.com | www.258363.com | www.466405.com | www.567954.com | www.077181.com | www.209293.com | www.44638.com | www.205720.com | www.0317.net | www.111762.com | www.1485.top | 中国福利彩票www.34788k.com | www.112147.com | www.787825.com | www.990461.com | 076957.com | www.816397.com | www.962322.com | 148822.com | www.590581.com | www.980341.com | www.759792.com | www.833852.com | 129142.com | www.cai0733.com | www.233495.com | www.12606.com | www.002614.cc | www.669640.com | www.367453.com | www.749190.com | www.621506.com | www.35qz.com | 824896.com | 088490.com | 653760.com | www.792391.com | 455947.com | www.985354.com | www.720779.com | www.872097.com | 964236.com | www.916301.com | www.1758.biz | www.16071.com | www.365211.cc | www.569293.com | www.829805.com | www.991661.com | www.hj56.com | www.ra17.com | www.9dq.com | 468009.com | 新盈彩www.xinyc1.com | 877579.com | 249369.com | www.842310.com | www.509235.com | www.996274.com | www.633091.com | www.772124.com | www.385063.com | www.75933.com | 853645.com | www.969932.com | www.426929.com | www.980125.com | www.551319.com | www.257726.com | www.10280.com | www.cz8.com | www.51483.com | 6832.biz | 397247.com | 882319.com | www.970649.com | www.708734.com | www.322723.com | www.529816.com | www.303147.com | www.311940.com | www.00ox.com | www.qk45.com | www.cp748.com | 297273.com | www.602200.com | www.882412.com | sg74.com | www.6530.vip | www.396081.com | www.274145.com | www.8019.loan | www.el91.com | 203371.com | www.948470.com | www.779994.com | www.1924.net | www.631098.com | www.zp03.com | www.143865.com | www.155747.com | www.169655.com | www.977689.com | www.626221.com | www.7057.biz | 金凤凰彩票www.10113.com | www.cm4.com | www.628350.com | www.7ju.com | 天天中彩票www.699925.com | 978936.com | 14185.com | www.25kj.com | www.cai6669.com | 978936.com | www.059016.com | www.961925.com | www.592812.com | www.609858.com | www.430141.com | www.089448.com | www.4798.cc | www.253397.com | www.228585.com | www.299308.com | www.160272.com | www.833757.com | www.681642.com | www.616796.com | www.973837.com | www.1463.com | www.045075.com | www.396161.com | www.190237.com | www.4916.vip | 144250.com | www.839711.com | www.283663.com | www.037096.com | www.xc77.cc | www.012113.com | www.7420.vip | www.95bv.com | 230265.com | www.936162.com | www.08003