Best in 7 days
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Description
Sobre la teoría de la relatividad especial y generalObra publicada en 1917, pocos aos antes de que Albert Einstein (1879 1955) estableciera definitivamente las famosas ecuaciones de campo de la relatividad general, "Sobre la teora de la relatividad especial y general" se propone dar una idea lo ms exacta posible de la teora de la relatividad, pensando en aquellos que, sin dominar el apartado matemtico de la fsica terica, tengan inters por la teora desde el punto de vista cientfico o filosfico general.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.6 ★★★★★
Based on 486 reviews
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Product Reviews
★★★★★ 5
Comfortable
Color: Grey, Size: Single
Wife uses it every day and loves it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 17, 2026
★★★★★ 5
Cómodo
Color: Grey, Size: Single
Versatil y cómodo, me gusta que trae su bolsa para guardar.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
★★★★★ 5
Like a new bed.
Color: White, Size: Queen
Surprising how small the box it was delivered in. As the packaging is removed, the topper grows to full size. Easy to install. Very comfortable to sleep in. Getting into and out of a bed that is four inches taller takes some getting used to.
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Great Topper
Color: White, Size: Twin XL
It was exactly what was needed.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Good to know.
Color: White, Size: Queen
Topper was great it saved my back
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Reviewed in the United States on April 18, 2026
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