Rejen med en sol inde i kløen
A small ocean shrimp snaps its claw so fast that it creates a flash of heat nearly as hot as the surface of the sun.
Before you read
Before you read
Denne reje er farligere end den ser ud til. Send dette til en der undervurderer små ting. I varme lavvandede have lever en reje knap på størrelse med en finger, med én overdimensioneret klo holdt klar som en ladt fjeder.
Når rejen smækker den klo i, sker det så hurtigt at det ikke bare rammer sit mål. Det skaber en boble i vandet der kollapser næsten øjeblikkeligt, og i en brøkdel af et sekund når det indre af den kollapsende boble en temperatur tæt på solens overflade. Lyden alene er højere end et skud, høj nok til at bedøve eller dræbe små fisk i nærheden.
Intet ved selve rejen bliver varmt. Varmen og lyden kommer begge fra boblen, forsvundet før den nogensinde kunne mærkes. Dykkere der arbejder nær koralrev, hører ofte smækkelyden, før de ser en eneste reje.
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