{"event":"ecommerce_event","event_name":"view_item","event_category":"browse_catalog","ecommerce":{"items":[{"item_id":"CHT276312","item_category":"object","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"italian_school_17th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_burning_mirror_of_archimedes_illustration_from_ars_magna_lucis_et_umbrae_by_athanasius_kircher_1","item_variant":"undefined"},{"item_id":"LLM3628854","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"concave_mirror_engraving","item_variant":"undefined"},{"item_id":"CEC128157","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"close_chuck_b_1940","item_category5":"not_balown","item_list_name":"search_results","item_name":"alex_1991","item_variant":"undefined"},{"item_id":"LLM3628868","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_phantasmagoria_engraving","item_variant":"undefined"},{"item_id":"LLM3628876","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"diorama_engraving","item_variant":"undefined"},{"item_id":"BCC124724","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"stolzl_gunta_1897_1983","item_category5":"not_balown","item_list_name":"search_results","item_name":"working_design_for_a_carpet_c_1927","item_variant":"undefined"},{"item_id":"LLM3628884","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"cannon_of_the_palais_royal_engraving","item_variant":"undefined"},{"item_id":"LLM3628859","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"fresnel_s_lighthouse_apparatus_engraving","item_variant":"undefined"},{"item_id":"PSZ80498","item_category":"illustration","item_category2":"in_copyright","item_category3":"premium","item_category4":"szumowski_peter","item_category5":"not_balown","item_list_name":"search_results","item_name":"abstract_composition_1996","item_variant":"undefined"},{"item_id":"CCI2636456","item_category":"photo","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"economy_carl_zeiss_factory_in_jena_germany_postcard_germany_1910","item_variant":"undefined"},{"item_id":"LLM3628864","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"solar_microscope_engraving","item_variant":"undefined"},{"item_id":"LLM3628873","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"how_to_produce_spectres_engraving","item_variant":"undefined"},{"item_id":"STM620848","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"kelly_ellsworth_1923_2015","item_category5":"not_balown","item_list_name":"search_results","item_name":"spectrum_ii_1966_67_oil_on_canvas","item_variant":"undefined"},{"item_id":"LLM3628852","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"newton_s_disc_engraving","item_variant":"undefined"},{"item_id":"LLM3628865","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"gregorian_telescope_engraving","item_variant":"undefined"},{"item_id":"XJL62386","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"le_parc_julio_b_1928","item_category5":"balown","item_list_name":"search_results","item_name":"vibratory_effects_1974","item_variant":"undefined"},{"item_id":"LLM3628880","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"wizard_dance_engraving","item_variant":"undefined"},{"item_id":"LLM3628869","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_fantascope_engraving","item_variant":"undefined"},{"item_id":"NUM118949","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"yvaral_vasarely_jean_pierre_1934_2002","item_category5":"not_balown","item_list_name":"search_results","item_name":"quadri_structure_no_91_1970","item_variant":"undefined"},{"item_id":"TAV273405","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"lohse_richard_paul_1902_88","item_category5":"not_balown","item_list_name":"search_results","item_name":"nine_horizontal_and_nine_vertical_color_rows_1950_84_acrylic_on_canvas","item_variant":"undefined"},{"item_id":"LLM3628853","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_effects_of_plane_mirrors_engraving","item_variant":"undefined"},{"item_id":"LLM3628872","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_spectre_an_optical_illusion_engraving","item_variant":"undefined"},{"item_id":"LLM3628851","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"disc_of_the_phenakistiscope_engraving","item_variant":"undefined"},{"item_id":"LLM3628855","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_reversal_of_real_images_engraving","item_variant":"undefined"},{"item_id":"LLR735010","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"optical_and_mechanical_chromolitho","item_variant":"undefined"},{"item_id":"LLM3628874","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_camera_obscura_engraving","item_variant":"undefined"},{"item_id":"LLM3628877","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_polemoscope_engraving","item_variant":"undefined"},{"item_id":"LLM3628878","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_goat_trick_engraving","item_variant":"undefined"},{"item_id":"LLM3628862","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_compound_microscope_engraving","item_variant":"undefined"},{"item_id":"LLM3628870","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"section_of_the_magic_lantern_engraving","item_variant":"undefined"},{"item_id":"LLM3628881","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"phantasmagoria_robertson_engraving","item_variant":"undefined"},{"item_id":"LLM3628866","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"foucault_s_large_telescope_engraving","item_variant":"undefined"},{"item_id":"LLM3628857","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"diminishing_power_of_convex_mirrors_engraving","item_variant":"undefined"},{"item_id":"LLM3628879","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"nostradamus_and_marie_de_medicis_engraving","item_variant":"undefined"},{"item_id":"LLM3628861","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"diminishing_effect_of_concave_lenses_engraving","item_variant":"undefined"},{"item_id":"LLM3628863","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_astronomical_telescope_engraving","item_variant":"undefined"},{"item_id":"LLM3628882","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"magic_lantern_engraving","item_variant":"undefined"},{"item_id":"LLM3628871","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"protection_against_ill_natured_people_engraving","item_variant":"undefined"},{"item_id":"LLM3628858","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"lantern_of_a_first_class_lighthouse_engraving","item_variant":"undefined"},{"item_id":"LLM3628867","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"foucault_s_small_telescope_engraving","item_variant":"undefined"},{"item_id":"KWE2603402","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"unknown_artist_18th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_theodolite_and_other_surveryor_s_instruments_engraving","item_variant":"undefined"},{"item_id":"LLM3628860","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"magnifying_property_of_convex_lenses_engraving","item_variant":"undefined"},{"item_id":"NUM117535","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"yvaral_vasarely_jean_pierre_1934_2002","item_category5":"not_balown","item_list_name":"search_results","item_name":"ambiguous_structure_no_51_1969_oil_on_canvas","item_variant":"undefined"},{"item_id":"LLM3628875","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"effect_of_cut_paper_work_engraving","item_variant":"undefined"},{"item_id":"LLM3628856","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"magnifying_effect_of_concave_mirrors_engraving","item_variant":"undefined"},{"item_id":"PSZ54902","item_category":"illustration","item_category2":"in_copyright","item_category3":"premium","item_category4":"szumowski_peter","item_category5":"not_balown","item_list_name":"search_results","item_name":"recession","item_variant":"undefined"},{"item_id":"GIA4694794","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"unknown_artist_16th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"page_of_optica_catoptrica_by_euclid_1557","item_variant":"undefined"},{"item_id":"GIA4694592","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"unknown_artist_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"reflective_mirrors_by_fresnel_1788_1827","item_variant":"undefined"},{"item_id":"HST1074947","item_category":"object","item_category2":"in_copyright","item_category3":"standard","item_category4":"boto_martha_1925_2004","item_category5":"not_balown","item_list_name":"search_results","item_name":"optique_electronique_1965_painted_wood_lights_aluminium_motor","item_variant":"undefined"},{"item_id":"CH348496","item_category":"object","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"a_fine_kaleidoscope_mahogany_brass_and_ivory","item_variant":"undefined"},{"item_id":"BIV325794","item_category":"illustration","item_category2":"in_copyright","item_category3":"premium","item_category4":"irving_brian_b_1960","item_category5":"not_balown","item_list_name":"search_results","item_name":"luxate_vessel_assemblage_green_orange_oil_on_board","item_variant":"undefined"},{"item_id":"CHT184321","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"lajoue_jacques_de_1687_1761_after","item_category5":"not_balown","item_list_name":"search_results","item_name":"burning_mirror_allegory_of_optics_engraved_by_charles_nicolas_cochin_1715_90_engraving_b_w_photo","item_variant":"undefined"},{"item_id":"TEP445946","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"heath_wing_of_london_18th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"astronomical_telescope_c_1765_brass_glass","item_variant":"undefined"},{"item_id":"LMG123073","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"riley_bridget_b_1931","item_category5":"not_balown","item_list_name":"search_results","item_name":"winter_palace_1981_oil_on_linen","item_variant":"undefined"},{"item_id":"XEE5029889","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"stefano_bianchetti","item_category5":"balown","item_list_name":"search_results","item_name":"illustration_in_opticae_thesaurus_by_alhazen_abu_ali_al_hasan_ibn_al_haitham_iraqi_mathematician_phy","item_variant":"undefined"},{"item_id":"SRM169474","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"burilin_20th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"textile_with_tractor_motif_1930_printed_cotton","item_variant":"undefined"},{"item_id":"BCC124725","item_category":"illustration","item_category2":"undetermined_copyright","item_category3":"standard","item_category4":"european_school_20th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"geometric_design_1930s","item_variant":"undefined"},{"item_id":"FLO4593803","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"optical_equipment_of_the_18th_century_copperplate_engraving_by_wilson_lowry_after_a_drawing_by_j_far","item_variant":"undefined"},{"item_id":"STC217087","item_category":"object","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"theodolite_used_for_surveying_during_the_construction_of_the_panama_canal_late_19th_century_see_also","item_variant":"undefined"},{"item_id":"STC217086","item_category":"object","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"theodolite_used_for_surveying_during_the_construction_of_the_panama_canal_late_19th_century_see_also","item_variant":"undefined"},{"item_id":"KCP395961","item_category":"illustration","item_category2":"in_copyright","item_category3":"premium","item_category4":"campbell_pedersen_kathrine","item_category5":"not_balown","item_list_name":"search_results","item_name":"communication_gaps_coping_2009_acrylic_on_canvas","item_variant":"undefined"},{"item_id":"BL3587683","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_17th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"title_page_of_a_new_invention_or_a_paire_of_cristall_spectacles_london_g_bishop_june_7_1644","item_variant":"undefined"},{"item_id":"GIA4803804","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"meyer_cornelis_jansz_1629_1701","item_category5":"not_balown","item_list_name":"search_results","item_name":"eyewear_for_all_kinds_of_views_engraving_by_c_meyer_from_nuovi_ritrovamenti_1689","item_variant":"undefined"},{"item_id":"CHT163647","item_category":"object","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"french_school_17th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"illustration_from_la_dioptrique_by_rene_descartes_1596_1650_following_the_discours_de_la_methode_fir","item_variant":"undefined"},{"item_id":"KCP389499","item_category":"illustration","item_category2":"in_copyright","item_category3":"premium","item_category4":"campbell_pedersen_kathrine","item_category5":"not_balown","item_list_name":"search_results","item_name":"communication_gaps_2009_acrylics_on_canvas","item_variant":"undefined"},{"item_id":"XKH141489","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"mavignier_almir_da_silva_b_1925","item_category5":"balown","item_list_name":"search_results","item_name":"shifting_and_colour_alternation_3_1968_oil_on_canvas","item_variant":"undefined"},{"item_id":"FLO4593778","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"optical_micrometers_including_dr_nevil_maskelyn_s_mr_edward_troughton_s_and_dr_william_herschel_s_la","item_variant":"undefined"},{"item_id":"IBE292005","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"vasarely_victor_1906_97","item_category5":"not_balown","item_list_name":"search_results","item_name":"marsan_1966","item_variant":"undefined"},{"item_id":"BCC124726","item_category":"illustration","item_category2":"undetermined_copyright","item_category3":"standard","item_category4":"european_school_20th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"geometric_design_1930s","item_variant":"undefined"},{"item_id":"LSE4100111","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"french_school_18th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"view_of_the_city_of_richelieu_in_poitou_optical_18th_century","item_variant":"undefined"},{"item_id":"PNX152694","item_category":"object","item_category2":"in_copyright","item_category3":"standard","item_category4":"soto_jesus_rafael_1923_2005","item_category5":"not_balown","item_list_name":"search_results","item_name":"grand_ecriture_large_writing_c_1963_66_wire_and_wood_assemblage","item_variant":"undefined"},{"item_id":"FLO4593776","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"single_microscope_mechanisms_and_parts_copperplate_engraving_by_wilson_lowry_after_a_drawing_by_j_fa","item_variant":"undefined"},{"item_id":"UIG3524506","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"optical_illusion_of_a_ghostly_figure","item_variant":"undefined"},{"item_id":"IMJ246717","item_category":"object","item_category2":"in_copyright","item_category3":"standard","item_category4":"duchamp_marcel_1887_1968","item_category5":"not_balown","item_list_name":"search_results","item_name":"rotoreliefs_optical_disks_1935_65_turntable_and_six_cardboard_disks","item_variant":"undefined"},{"item_id":"BIV325796","item_category":"illustration","item_category2":"in_copyright","item_category3":"premium","item_category4":"irving_brian_b_1960","item_category5":"not_balown","item_list_name":"search_results","item_name":"time_and_the_abstract_truth_lapis_orange_oil_on_board","item_variant":"undefined"},{"item_id":"XEE5026974","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"balown","item_list_name":"search_results","item_name":"reconstruction_of_archimede_s_burning_mirror_in_ars_magna_lucis_et_umbrae_published_in_1646_in_rome","item_variant":"undefined"},{"item_id":"XIR229956","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"rouan_francois_b_1943","item_category5":"balown","item_list_name":"search_results","item_name":"season_vii_1978_79_oil_on_canvas","item_variant":"undefined"},{"item_id":"NGV478922","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"vasarely_victor_1906_97","item_category5":"not_balown","item_list_name":"search_results","item_name":"optical_composition_1969_screenprint","item_variant":"undefined"},{"item_id":"UIG5311410","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"an_engraving_depicting_a_method_of_using_a_camera_obscura_as_a_drawing_aid_19th_century","item_variant":"undefined"},{"item_id":"BIA327348","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"davis_ronald_b_1937","item_category5":"not_balown","item_list_name":"search_results","item_name":"octrahedron_2001_giclee_petgloss","item_variant":"undefined"},{"item_id":"STC397230","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"french_school_17th_century_after","item_category5":"not_balown","item_list_name":"search_results","item_name":"dioptric_telescope_copy_of_an_engraving_by_boris_mestchersky_d_1957_illustration_from_histoire_de_la","item_variant":"undefined"},{"item_id":"KWE2603403","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"unknown_artist_18th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"different_types_of_astronomical_quadrants_engraving","item_variant":"undefined"},{"item_id":"BRI180555","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"riley_bridget_b_1931","item_category5":"not_balown","item_list_name":"search_results","item_name":"untitled_winged_curve_1966_screenprint_on_paper","item_variant":"undefined"},{"item_id":"SBN2652545","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"elmer_edwin_romanzo_1850_1923","item_category5":"not_balown","item_list_name":"search_results","item_name":"magic_glasses_1891_oil_on_canvas","item_variant":"undefined"},{"item_id":"MME4782946","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category4":"mencarini_marcello","item_category5":"not_balown","item_list_name":"search_results","item_name":"festival_of_literatures_rome_2012_italian_actress_franca_valeri_festival_letterature_roma_2012_the_a","item_variant":"undefined"},{"item_id":"CH348497","item_category":"object","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"a_fine_kaleidoscope_mahogany_brass_and_ivory","item_variant":"undefined"},{"item_id":"LLM966576","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"parhelia_or_mock_suns_engraving","item_variant":"undefined"},{"item_id":"LIS373056","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"wilson_robert_arthur_1884_1979","item_category5":"not_balown","item_list_name":"search_results","item_name":"colour_wheel_1919_oil_on_canvas","item_variant":"undefined"},{"item_id":"NUM118713","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"vasarely_victor_1906_97","item_category5":"not_balown","item_list_name":"search_results","item_name":"composition_c_1960_oil_on_canvas","item_variant":"undefined"},{"item_id":"GIA4694746","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"unknown_artist_16th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"frontispice_of_optica_catoptrica_by_euclid_1557","item_variant":"undefined"}]}}

{"event":"custom_event","event_name":"view_search_result","event_category":"browse_catalog","keyword":"optisch","search_type":"standard","search_bridgeman_artists":"false","search_mode":"automatic","search_zero_result":"false","search_results":628,"search_results_page_number":1}