The words penumbra and ant-umbra and umbra all have the same root origin. They originate from the Latin word umbra, which means shade.
The word "umbra" means "total shadow", wile the word "penumbra" refers to a partial shadow. So when the Moon enters the Earth's shadow in a total lunar eclipse, it passes through the penumbra, in which part of the sunlight reaching the Earth is blocked, and goes into the umbra, where no sunlight can directly strike the Moon.
The origin of the word phenomenon is Greek or Latin.
Original is the adjective related to the word origin. Adjectives describing origin include ethnic, genetic, and maternal.
Latin.
Middle english
The word "penumbra" has two Latin roots, paene ("almost") and umbra ("shadow").
umbra, penumbra, umbrella, ...
penumbra The Latin word "umbra" means "shadow". The prefix "pen-" means "almost" or "partly", so "penumbra" means a partial shadow.
Umbra is latin for shadow. It's often used for the central part of the shadow of the moon during an eclipse. The outer part of the shadow, or penumbra, still receives some light.
The umbraUmbra comes from the Latin "shadow". It is the darkest part of a shadow. From within the umbra, the source of light is completely blocked by the object causing the shadow. This contrasts with the penumbra, where the light source is only partially blocked and there is only a partial shadow.
There are two main shadows that Earth projects; one is called the 'umbra', which is the complete shadow where all direct light is blocked out, the other is the 'penumbra', which is a partial shadow. The effect is similar to standing in front of a light source and seeing both a dark shadow in the middle (the umbra) and a lighter shadow on the outer edge (the penumbra). During this eclipse the Moon will pass through both shadows.
You're on exactly the right track, and you're thinking exactly right.But it's not exactly the "moon's" penumbra ... it's the penumbra ofthe moon's shadow.
adumbration, blackness, coolness, cover, darkness, dusk, gloominess, obscuration, obscurity, penumbra, screen, semidarkness, shadiness, shadow, shadows, umbra, umbrage
The penumbra landed on the eclipse.
The latin word for shadow is Umbra (Umbrella means a little shadow!) Umbra is the latin translation meaning shadow.
The word "umbra" means "total shadow", wile the word "penumbra" refers to a partial shadow. So when the Moon enters the Earth's shadow in a total lunar eclipse, it passes through the penumbra, in which part of the sunlight reaching the Earth is blocked, and goes into the umbra, where no sunlight can directly strike the Moon.
Totality in a solar eclipse is the state in which the sun is completely blocked by the moon so that only the corona and perhaps solar prominence are visible. During this time and only this time is it safe to look at a solar eclipse without eye protection. The area that experiences totality is in the moon's umbra, the darkest part of its shadow. Only a relatively small area can experience totality at any given time. Since the umbra moves along the surface quickly, no single area experiences totality for more than a few minutes. Surrounding the umbra is the much larger penumbra. Areas in the penumbra witness a partial eclipse, where the moon only blocks part of the sun. Even areas along the path of totality will be in the penumbra for a while before and after totality.