関連する実験動画

Updated: Jul 12, 2026

A Modified Mirror Test as a Visual Guide for the Self-awareness Trait in Wild Antarctica Penguins, Pygoscelis adeliae
04:51

A Modified Mirror Test as a Visual Guide for the Self-awareness Trait in Wild Antarctica Penguins, Pygoscelis adeliae

Published on: July 8, 2025

北極のミラージュと北大西洋初期の北大西洋

H L Sawatzky, W H Lehn

    Science (New York, N.Y.)
    |June 25, 1976
    PubMed
    まとめ

    温度の逆転によって引き起こされる北極のミラージュは,北大西洋のノルウェー人探検家たちを導いたのかもしれません. この現象は,平らな地球に対する古代の信念を説明できる.

    さらに関連する動画

    Using Generative Art to Convey Past and Future Climate Transitions06:10

    Using Generative Art to Convey Past and Future Climate Transitions

    Published on: March 31, 2023

    Evolution of Staircase Structures in Diffusive Convection07:28

    Evolution of Staircase Structures in Diffusive Convection

    Published on: September 5, 2018

    関連する概念動画

    Latitudes and Departures01:27

    Latitudes and Departures

    Latitudes and departures are essential concepts in surveying, providing a systematic way to analyze the projections of traverse lines. These projections allow surveyors to interpret a line's north-south and east-west components, which are crucial for precisely calculating areas, bearings, and lengths. Latitude is the north-south projection of a line, calculated as the product of the line's length and the cosine of its bearing. Departure, conversely, is the east-west projection obtained by...
    Masonry in Cold and Hot Weather Conditions01:21

    Masonry in Cold and Hot Weather Conditions

    In cold weather, masonry construction requires specific precautions to ensure mortar does not freeze before curing, as this can significantly weaken its strength and watertightness. Mortar temperature should be maintained between 60°F and 80°F to support proper hydration and curing. Below 40°F, mortar water must be heated, but should not exceed 120°F as high temperatures can reduce mortar's compressive and bond strength.
    Other key practices include keeping masonry units and sand dry and...
    Magnetic Declination01:19

    Magnetic Declination

    Magnetic declination is the angle between true north, which aligns with the Earth's rotational axis, and magnetic north, which follows the direction of the Earth's magnetic field. This discrepancy exists because the magnetic poles do not coincide with the geographic poles. The value of magnetic declination depends on the observer's location on Earth and is subject to changes over time due to the dynamic nature of the Earth's magnetic field.The declination is called eastern when magnetic north...
    Boundary Layer Characteristics01:18

    Boundary Layer Characteristics

    When a fluid encounters a solid surface, a boundary layer forms due to the interaction between the fluid's motion and the stationary surface. This phenomenon is characterized by a thin region adjacent to the surface where viscous forces dominate, influencing the fluid's velocity profile. The development of the boundary layer begins at the leading edge of the surface and evolves as the fluid moves downstream.As the fluid flows over the surface, friction between the fluid and the wall slows down...
    Azimuths and Bearings01:19

    Azimuths and Bearings

    Azimuths and bearings are essential concepts in surveying, providing methods to express the direction of a line relative to a meridian. Azimuths refer to the clockwise angle measured from the north end of a reference meridian to the given line, ranging from zero to 360 degrees. This method gives a comprehensive directional reference within a full 360-degree circle, making it a straightforward way to communicate direction in various fields, including navigation, cartography, and...
    Instinctive Drift01:05

    Instinctive Drift

    Instinctive drift refers to the tendency of animals to revert to their innate behaviors despite repeated reinforcement. Breland and Breland demonstrated this concept in an experiment with a raccoon. The raccoon was trained to pick up two coins and place them in a container in exchange for food. Initially, the raccoon learned to associate the coins with food, making them a conditioned stimulus or a substitute for food. However, over time, the raccoon became less willing to put the coins into the...