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2. Free-space path loss - Wikipedia

   en.wikipedia.org/wiki/Free-space_path_loss

   Free-space path loss. In telecommunication, the free-space path loss ( FSPL) (also known as free-space loss, FSL) is the attenuation of radio energy between the feedpoints of two antennas that results from the combination of the receiving antenna's capture area plus the obstacle-free, line-of-sight (LoS) path through free space (usually air). [ 1]

3. List of image-sharing websites - Wikipedia

   en.wikipedia.org/wiki/List_of_image-sharing_websites

   Unlimited uploads with 30 MB limit per image for all account types. Dronestagram. France. Free, Dronestagram is a photo sharing community dedicated to drone photography. The site that has been described as " Instagram for drones ", allows hobbyists to share their geo-referenced aerial photos and videos.

4. Free-space optical communication - Wikipedia

   en.wikipedia.org/wiki/Free-space_optical...

   Free-space optical communication ( FSO) is an optical communication technology that uses light propagating in free space to wirelessly transmit data for telecommunications or computer networking. "Free space" means air, outer space, vacuum, or something similar. This contrasts with using solids such as optical fiber cable .

5. Impedance of free space - Wikipedia

   en.wikipedia.org/wiki/Impedance_of_free_space

   μ 0 ≈ 12.566 × 10 −7 H/m is the magnetic constant, also known as the permeability of free space, ε 0 ≈ 8.854 × 10 −12 F/m is the electric constant, also known as the permittivity of free space, c is the speed of light in free space, [9] [10] The reciprocal of Z 0 is sometimes referred to as the admittance of free space and ...

6. Comparison of file hosting services - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_file_hosting...

   10. fileWrite allows existing files to become "hidden", which may get deleted with lifecycle rule daysFromHidingToDeleting. Yes. Baidu Cloud. 2 TB. (6 GB free) [ 5] 4 GB free, 20 GB paid [ 6] Traffic limit is not stable, after going over the traffic limit, there is a bandwidth limited to 500 KB/s then 10 KB/s after another traffic limit.

7. Vacuum permittivity - Wikipedia

   en.wikipedia.org/wiki/Vacuum_permittivity

   Vacuum permittivity, commonly denoted ε0 (pronounced "epsilon nought" or "epsilon zero"), is the value of the absolute dielectric permittivity of classical vacuum. It may also be referred to as the permittivity of free space, the electric constant, or the distributed capacitance of the vacuum. It is an ideal (baseline) physical constant.

8. Permeability (electromagnetism) - Wikipedia

   en.wikipedia.org/wiki/Permeability...

   v. t. e. In electromagnetism, permeability is the measure of magnetization produced in a material in response to an applied magnetic field. Permeability is typically represented by the (italicized) Greek letter μ. It is the ratio of the magnetic induction to the magnetizing field as a function of the field in a material.

9. Vacuum permeability - Wikipedia

   en.wikipedia.org/wiki/Vacuum_permeability

   The vacuum magnetic permeability (variously vacuum permeability, permeability of free space, permeability of vacuum, magnetic constant) is the magnetic permeability in a classical vacuum. It is a physical constant, conventionally written as μ0 (pronounced "mu nought" or "mu zero"). It quantifies the strength of the magnetic field induced by an ...