About Us +
Researchers in the Building Technology & Urban Systems Division (BTUS) at Lawrence Berkeley National Laboratory develop data and technologies that increase energy efficiency and improve the health, safety and comfort of building occupants, in the United States and worldwide.

We work closely with industry partners, academics and government officials to achieve these goals, and share our research widely
Research +
We are at the forefront of cutting-edge research that redefines building technology and explores all areas of urban systems.

We have been leaders for decades in developing energy-efficient windows, improving indoor air quality, coming up with new ideas to fix the nation's electricity grid, and so much more.

Visit our research areas at the right to find out more.
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Publications +
Enjoy presentations from Building Technology & Urban systems research experts on a wide variety of topics in the areas of building energy efficiency, the electricity grid and how it relates to buildings and much more.
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News
Tools & Guides +
Explore our tools, guidebooks and software and download for free.

We offer a variety of technologies designed to simulate and model real-world circumstances to assist in energy-saving programs and help building owners build better buildings. These tools can help calculate performance of building systems like windows and shades, help consumers and builders pick the best windows for a variety of applications and much more.

Publications

Publications By Research Area

1988

Jewett, Don L, Sam M Berman, M.R Greenberg, George Fein, and Richard M Nahass."The Lack of Effects on Human Muscle Strength of Light Spectrum and Low-Frequency Electromagnetic Radiation in Electric Lighting."Journal of the Illuminating Engineering Society (1988).

1987

Clear, Robert D, and Sam M Berman."Lighting Recommendations as Input to Cost-Benefit Calculations."1987 IES National Conference (1987).

Berman, Sam M, Don L Jewett, and Larry R Bingham."Comparison of Pupillary Responses to Low and High Frequency Lighting."21st Session of the Commission Internationale de lEclairage (CIE) 2 (1987).

Berman, Sam M, Don L Jewett, Larry R Bingham, Richard M Nahass, Franklin Perry, and George Fein."Pupillary Size Differences Under Incandescent and High Pressure Sodium Lamps."Journal of the Illuminating Engineering Society Winter (1987) 3-20.

Clear, Robert D, and Sam M Berman."To Average, or Not To Average."Lighting Design + Application 17 (1987) 28-31.

1986

Zhou, T, L Wang, Donald D Hollister, Sam M Berman, and Robert W Richardson."Magnetic Enhancement of Ultraviolet Radiation Efficiency of Low Pressure Hg-Ar Discharge."Journal of the Illuminating Engineering Society 16.1 (1986) 176-181. DOI

Berman, Sam M, and Robert W Richardson."Determination of the Excited State Density of an Optically Thick Line."Journal of Quantitative Spectroscopy and Radiation Transfer 37 (1986) 471-475.

1985

Berman, Sam M."Lighting Research Program."12th Energy Tech. Conference and Exposition (1985).

Clear, Robert D, and Sam M Berman."Target Size, Visibility, and Roadway Performance."Journal of the Illuminating Engineering Society 15 (1985) 167-180.

1984

Wang, Zhien, Donald D Hollister, and Sam M Berman."Development of Novel Lamps for Study of Enhanced Production of Resonance Radiation by Low-Density Mercury Discharges."1984 IEEE-IAS Annual Meeting (1984).

Clear, Robert D, and Sam M Berman."Analysis of a Visual Performance Experiment."Journal of the Illuminating Engineering Society 14 (1984) 448-465.

1983

Berman, Sam M, Daniel S Greenhouse, Ian L Bailey, and Arthur Bradley."Experimental Studies Relating Environmental Lighting Flicker to Visual Fatigue in VDT Operators."20th Session of CIE (CIE Session 83) (1983).

Richardson, Robert W, and Sam M Berman."Experimental Studies of Enhanced Emittance by Zeeman Splitting of a Low-Pressure Mercury/Argon Discharge."3rd International Symposium on the Science and Technology of Light Sources (1983).

Clear, Robert D, and Sam M Berman."Fundamental Problems with Visual Performance Research Described in the CIE 19/2 Report."1983 IES Annual Conference (1983).

1982

Clear, Robert D, and Sam M Berman."Relating Productivity to Visibility and Lighting."The Integration of Visual Performance Criteria into the Illumination Design Process (1982) 184-212.

1981

Clear, Robert D, and Sam M Berman."A New Look at Models of Visual Performance."Journal of the Illuminating Engineering Society 12 (1981) 242-247.

1980

Clear, Robert D, and Sam M Berman."Cost Effectiveness of Visibility-Based Design Procedures for General Office Lighting."Illuminating Engineering Society Annual Technical Conference (1980).