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- Varian VA-201B Klystron Tube, circa 1955 - The klystrom is a vacuum tube that amplifies high-range radio frequencies; it is an essential factor in the history of radar, microwave, and telecommunications. Klystroms also power UHF television, particle accelerators, and radiation therapy equipment. In 1937, brothers Russell and Sigurd Varian invented the klystrom, and founded Varian Associates -- one of the first technology companies in Silicon Valley.

- circa 1955
- Collections - Artifact
Varian VA-201B Klystron Tube, circa 1955
The klystrom is a vacuum tube that amplifies high-range radio frequencies; it is an essential factor in the history of radar, microwave, and telecommunications. Klystroms also power UHF television, particle accelerators, and radiation therapy equipment. In 1937, brothers Russell and Sigurd Varian invented the klystrom, and founded Varian Associates -- one of the first technology companies in Silicon Valley.
- Cutaway of a Varian V-153 Klystron Tube, circa 1955 - The klystrom is a vacuum tube that amplifies high-range radio frequencies; it is an essential factor in the history of radar, microwave, and telecommunications. Klystroms also power UHF television, particle accelerators, and radiation therapy equipment. In 1937, brothers Russell and Sigurd Varian invented the klystrom, and founded Varian Associates -- one of the first technology companies in Silicon Valley.

- circa 1955
- Collections - Artifact
Cutaway of a Varian V-153 Klystron Tube, circa 1955
The klystrom is a vacuum tube that amplifies high-range radio frequencies; it is an essential factor in the history of radar, microwave, and telecommunications. Klystroms also power UHF television, particle accelerators, and radiation therapy equipment. In 1937, brothers Russell and Sigurd Varian invented the klystrom, and founded Varian Associates -- one of the first technology companies in Silicon Valley.
- Varian V-42 Klystron - The klystrom is a vacuum tube that amplifies high-range radio frequencies; it is an essential factor in the history of radar, microwave, and telecommunications. Klystroms also power UHF television, particle accelerators, and radiation therapy equipment. In 1937, brothers Russell and Sigurd Varian invented the klystrom, and founded Varian Associates -- one of the first technology companies in Silicon Valley.

- Collections - Artifact
Varian V-42 Klystron
The klystrom is a vacuum tube that amplifies high-range radio frequencies; it is an essential factor in the history of radar, microwave, and telecommunications. Klystroms also power UHF television, particle accelerators, and radiation therapy equipment. In 1937, brothers Russell and Sigurd Varian invented the klystrom, and founded Varian Associates -- one of the first technology companies in Silicon Valley.
- Varian VA-220A Klystron Tube, circa 1959 - The klystrom is a vacuum tube that amplifies high-range radio frequencies; it is an essential factor in the history of radar, microwave, and telecommunications. Klystroms also power UHF television, particle accelerators, and radiation therapy equipment. In 1937, brothers Russell and Sigurd Varian invented the klystrom, and founded Varian Associates -- one of the first technology companies in Silicon Valley.

- circa 1959
- Collections - Artifact
Varian VA-220A Klystron Tube, circa 1959
The klystrom is a vacuum tube that amplifies high-range radio frequencies; it is an essential factor in the history of radar, microwave, and telecommunications. Klystroms also power UHF television, particle accelerators, and radiation therapy equipment. In 1937, brothers Russell and Sigurd Varian invented the klystrom, and founded Varian Associates -- one of the first technology companies in Silicon Valley.
- Varian VA-800 Klystron Tube, circa 1959 - The klystrom is a vacuum tube that amplifies high-range radio frequencies; it is an essential factor in the history of radar, microwave, and telecommunications. Klystroms also power UHF television, particle accelerators, and radiation therapy equipment. In 1937, brothers Russell and Sigurd Varian invented the klystrom, and founded Varian Associates -- one of the first technology companies in Silicon Valley.

- circa 1959
- Collections - Artifact
Varian VA-800 Klystron Tube, circa 1959
The klystrom is a vacuum tube that amplifies high-range radio frequencies; it is an essential factor in the history of radar, microwave, and telecommunications. Klystroms also power UHF television, particle accelerators, and radiation therapy equipment. In 1937, brothers Russell and Sigurd Varian invented the klystrom, and founded Varian Associates -- one of the first technology companies in Silicon Valley.
- Varian VA-97 Klystron Tube, circa 1955 - The klystrom is a vacuum tube that amplifies high-range radio frequencies; it is an essential factor in the history of radar, microwave, and telecommunications. Klystroms also power UHF television, particle accelerators, and radiation therapy equipment. In 1937, brothers Russell and Sigurd Varian invented the klystrom, and founded Varian Associates -- one of the first technology companies in Silicon Valley.

- circa 1955
- Collections - Artifact
Varian VA-97 Klystron Tube, circa 1955
The klystrom is a vacuum tube that amplifies high-range radio frequencies; it is an essential factor in the history of radar, microwave, and telecommunications. Klystroms also power UHF television, particle accelerators, and radiation therapy equipment. In 1937, brothers Russell and Sigurd Varian invented the klystrom, and founded Varian Associates -- one of the first technology companies in Silicon Valley.