When you see bats flying around at night, they seem silent. But “even though we can’t hear them, bats are actually very loud in their calls,” says Te Jones. They are screaming sounds that are too high-pitched for your ears.
Jones is a graduate student in Psychological & Brain Sciences at Johns Hopkins University in Maryland. She studies how bats “see” in the dark using echolocation. As a bat flies, it emits a beam of sound from its mouth or nose, then listens for the echoes bouncing off objects. Jones says a bat can aim the beam in different directions. If an insect flies through the beam, a bat can tell the insect’s size and location, along with how fast it is flying and in what direction. As part of Cynthia Moss’s research group at Johns Hopkins, she works with other scientists and students to study how bats use their echolocation superpower. Their experiments take place in a special room called—what else?—the Batlab.
CAN YOU DESCRIBE THE BATLAB?
It’s basically a collection of rooms that are covered floor-to-ceiling with foam that dampens sounds, so that bats aren’t getting these really strong echoes from, say, a concrete floor or really hard wall. And then there are some microphones spread out around the room. They are all fixed to the wall, and they cover the entire four walls. No matter where the bat happens to be pointing its head, we always have a microphone that can be picking up the call.
ãã®èšäºã¯ Muse Science Magazine for Kids ã® January 2021 çã«æ²èŒãããŠããŸãã
7 æ¥éã® Magzter GOLD ç¡æãã©ã€ã¢ã«ãéå§ããŠãäœåãã®å³éžããããã¬ãã¢ã ã¹ããŒãªãŒã9,000 以äžã®éèªãæ°èã«ã¢ã¯ã»ã¹ããŠãã ããã
ãã§ã«è³Œèªè ã§ã ?  ãµã€ã³ã€ã³
ãã®èšäºã¯ Muse Science Magazine for Kids ã® January 2021 çã«æ²èŒãããŠããŸãã
7 æ¥éã® Magzter GOLD ç¡æãã©ã€ã¢ã«ãéå§ããŠãäœåãã®å³éžããããã¬ãã¢ã ã¹ããŒãªãŒã9,000 以äžã®éèªãæ°èã«ã¢ã¯ã»ã¹ããŠãã ããã
ãã§ã«è³Œèªè ã§ã? ãµã€ã³ã€ã³
A Mars Rock Found With Leopard Spots Could Be a Sign of Ancient Life
IN JULY, NASA'S PERSEVERANCE ROVER CAME ACROSS A SPOTTED ROCK IN WHAT WAS ONCE A RIVERBED IN THE JEZERO CRATER ON MARS.
Para Athlete Uses Exoskeleton Suit to Carry the Olympic Torch
In July, a 36-year-old French tennis para athlete, Kevin Piette, got a chance to participate in this summerâs Olympic torch relay without using a wheelchair.
Ancient Egyptians May Have Used a Water System to Lift Stones to Build Pyramid
HOW ANCIENT EGYPTIANS BUILT THE MASSIVE PYRAMIDS IN EGYPT MORE THAN 4,000 YEARS AGO HAS LONG BEEN A TOPIC OF WONDER AND DEBATE.
Seals Can Make Big Dives Thanks to Their Big Hearts
SEALS AND SEA LIONS, WHICH ARE SEMI-AQUATIC MAMMALS, CAN HOLD THEIR BREATHS UNDERWATER FOR ESPECIALLY LONG PERIODS OF TIME.
THE BIG-CITY LIFE OF STEVEN J.BIKE SHOP RABBIT IN BROOKLYN, NEW YORK
Bicycle Roots is a full-service bike shop. It's in the heart of Brooklyn, New York. Joe Lawler is the co-owner and service manager. Perhaps more important, he's \"dad\" to the shop's most popular employee. That's Steven J. Lawler.
Wild Ones
WHAT FACTORS DRIVE PEOPLE TO BUY MONKEYS, TIGERS, AND OTHER WILD ANIMALS?
HOW TO CONQUER THE WORLD
A brief history
What would happen if meteors hit Earth?
You may have seen Ameteors fly into Earth's atmosphere, in the form of shooting stars.
WORKING WORMS
DON'T JUST THROW THOSE TABLE SCRAPS AWAY! LET A BOX OF WORMS TURN THEM INTO SOMETHING USEFUL.
Dog Rescue Saves Lives
THE ARGUMENT FOR ADOPTING A NO-KILL GOAL